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不同变化     
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  different change
     According to the different change,of incremental yield (Yi )、the meanYi per kg N(Yi/x)and the mean marginal yield(△Yi/△x),the entire form of response curveof Yi to x might be divided into three stages of successive increase,successive decrease andnegative effect.
     根据增产量(Yi)、每公斤氮的平均增产量(Yi/X)和边际增产量(△Yi/△x)的不同变化,可将增产效应的完整曲线区分为效应递增、效应递减和负效应三个阶段。
短句来源
     Based on discrete algorithm of propagation-rate equation,the ASE dynamic behavior of Er~(3+)/Yb~(3+) co-doped double-clad fiber amplifier under both continuous and pulse pumping is studied. The reason for different change of the ASE output power with time is analyzed as well.
     基于速率方程的离散算法,对连续和脉冲泵浦下的双包层Er3+/Yb3+共掺光纤放大器ASE动态特性进行了研究,对ASE随时间呈现不同变化的原因进行了分析。
短句来源
     The one deeper reason of different clinicopathological characteristics of medulloblastoma is the different change of CyclinD1 and P16 expression that induces the different alteration of cell cycle.
     (2)髓母细胞瘤临床病理特点的不同更深层次的原因之一是肿瘤细胞CyclinD1和P16发生了不同变化从而导致肿瘤细胞形成各自不同的细胞周期改变。
短句来源
     Contrast classification results of RS images to acquire wetland type area conversion matrix according to DN difference of different change types.
     在分类后比较法中,对湿地分类结果进行比较,利用不同变化类型灰度值存在差异的原理,获得湿地类型面积转移矩阵,使得湿地的变化数量、变化类型及变化方向一目了然,是湿地动态监测的一种有效方法。
短句来源
     Modeling Methods for Time Series With Different Change Regulations
     具不同变化规律的时间序列建模方法
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  different changes
     Different Changes of Soluble Protein in Seeding of Wheat Irradiated by ~(16)O~(8+) Ions
     ~(16)O~(8+)离子辐照普通小麦引起幼苗可溶性蛋白质的不同变化
短句来源
     Methods 1285 positive cases of TGAb and TMAb were divided into three groups,based on the different changes ofT_3, T_4 and TSH (normal,above,below).
     方法 对1285例TGAb、TMAb阳性检测者,结合其T_3、T_4、TSH值的不同变化,进行分析。
短句来源
     Conclusions In the pathogenetic process of rat lenses with seawater immersion,different changes occurred in the activity expression of Na~+,K~+-ATPase subunits.
     结论在晶状体海水浸泡伤的病变过程中,Na+,K+-ATP酶亚单位活性的表达有不同变化
短句来源
     Objective:To study different changes of left ventricular function between coronary artery disease and X syndrome.
     目的:探讨X综合征和冠心病左心室功能的不同变化
短句来源
     Two different features of the structural relaxation in thet emperature range of 175—200℃ and 400—420℃ respectively are found to correspond with the different changes of the magnetic properties.
     在175—200℃和400—420℃区域内产生两种不同特征的结构弛豫,对应着磁性的不同变化
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  different variation
     There were different variation with TNF-α, IL-8, IL-10 in serum when dexamethasone was given at different times. These variation was more obviousness at 120 min.
     并且,不同时间应用地塞米松治疗后血清TNF-α、IL-8及IL-10水平有相应的不同变化,以120min用药变化显著。
短句来源
     The different variation trends of Pinus tabulaeformis and Platycladus orientalis seedlings in hydraulic architecture characteristics during drought is favor to people's understanding on trees water physiology trait from new point of view.
     油松、侧柏苗木在干旱过程中水力结构的不同变化趋势 ,有助于人们从新的角度认识树木的水分生理特性
短句来源
     The paper also reveal the difference in working dimension stability based on the different variation in metal internal arrangement caused by the different time effect.
     同时从两种时效时金属内部组织的不同变化 :热时效减少晶格畸变、振动时效使金属组织进一步细化 ,位错密度增加 ,揭示振动时效与热时效在工件尺寸稳定性方面的差异。
短句来源
     Finally, based on the analysis on the actual displacement monitoring data of the different evolution stages of Xitan landslides, it is found that the displacement vector angles of the slope are of different variation laws in different stability evolution stages, and these dynamic variation laws are coincided well with the actual landslides stage.
     最后运用新滩滑坡不同 演化阶段的实际位移监测资料进行了验证分析,发现新滩边坡稳定性不同,则演化阶段的坡体位移矢量角具有不 同变化规律,而且这些动态变化规律与该边坡实际变形失稳阶段相吻合。
短句来源
     Modeling the systematic components of different variation sources and implementing these effects in circuit simulation are key to reduce design uncertainty and maximize circuit performance.
     在电路仿真时对不同变化源的系统部分建模和分析成为减少设计不确定和最大化电路性能的关键。
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  different variety
     Aimed at the different variety trends of coal (rock) sampletemperature field, the all experiment sample's temperaturevarieties are classified in four types.
     针对试件在破坏过程中温度场的不同变化趋势,把试件在单轴压缩和剪切破坏的受载情况下的温度场变化分成四种类型。
短句来源
     This experiment all at to horizontal and different variety in hormone the Leptin in earlier period in gestation in sheep, To judge the sheep whether gestation or single a embryos and sheep earlier period gestations grow the physiology changes. The judging to provide a dependable science for the earlier period in sheep gestation according.
     本试验旨在对绵羊妊娠早期瘦素(Leptin)激素水平的不同变化进行研究,以判断绵羊是否妊娠或单双胎及绵羊早期妊娠的生殖生理变化,为绵羊早期妊娠的判定提供一条可靠的科学依据。
短句来源
     According to the rationality that any micro thermodynamics process can be treated as a linear process, the value range of the molar heat capacity in different variety states is given and the computing problem of rigidity ideal gas molar heat capacity in correlative courses can be resolued.
     根据任一微小热力学过程可视为线性过程的合理性 ,本文给出了在不同变化形态下摩尔热容的取值范围 ,解决了刚性理想气体摩尔热容在相关过程中的计算问题
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      different change
    Also, under the test conditions, different change tendencies of the metal solid fraction were found between castings with different thicknesses and the die.
          
    This results not only in quantitative differences in their characteristics but also in a qualitatively different change in the properties of these materials on nitriding.
          
    AFM pictures showed that the pits on the corona-treated PE fiber surfaces had different change characteristics in depth compared with in length and breadth with variations of corona power.
          
    The results show that the activities of trypsin and chymotrypsin had two different change patterns.
          
    A switching regression model with different change-points for individual coefficients and its application to the energy demand e
          
    更多          
      different changes
    Different changes in cardiac rhythm and excitation conduction as well as repolarization and metabolic disturbances in the myocardium were often observed at this age.
          
    Variations in the mechanisms of damage accumulation under static and fatigue loading lead to different changes in the material ductility at the same magnitude of accumulated uniaxial strain.
          
    It was revealed that the treatment resulted in an increase in fish length and weight, in a decrease in total amylolytic and saccharase activities, and in different changes in parameters of di-and polysaccharide hydrolyses.
          
    It was shown that the concentration dependence of ε' for Na-PMAA aqueous solutions at all αi values contains two regions corresponding to different changes in ε', and the above regions are separated by the crossover point w*2.
          
    Our three treatment catchments (un-restored barren land, single-species plantation, and mixed-forest stand) exhibited dramatically different changes in biodiversity and ecosystem functioning over 4 decades.
          
    更多          
      different variation
    The equivalent widths and fluxes of various spectral lines show different variation amplitudes during outburst and significantly different behavior during quiescence.
          
    Model estimates of global climatic changes in the 21st century with account for different variation scenarios of solar activity
          
    During the wear process, sub-surface micro-hardness values of ZA43 alloy and TiC/ZA43 composites give a different variation.
          
    The different variation tendency for fracture strength and elongation arised from this change of fracture mode and subsequent work hardening.
          
    The results show that there was a high consistency of the monthly mean surface air temperature, with a secondarily different variation between the north and the south of the plateau.
          
    更多          
      different variety
    By way of capillary extrusion, effects upon rheology of the in situ composites of the low melting point metals (LMPM) and coupling agent for their different variety and content, were investigated.
          
    Each lot of seed was from a different variety of cotton.
          
    Three lots of mature potatoes of different variety and location were studied to obtain information on the quality on the cooked product by pressure cooking of pared whole and pared sliced potatoes.
          
    The study was conducted in the Georgia Coastal Plain during 1998, 1999, and 2001, using a different variety of cotton in each year.
          
    oleracea found among accessions and a mere 7% among varieties, but also a cluster analysis showed that accessions of a single botanical variety are often more similar to those of a different variety than to each other.
          
    更多          


    After the construction of reservior in an alluvial stream, the equilibrium condition of the downstream channel will be upsetted due to the reduction of sediment supply. This will result in a change in the form and gradient of the channel. The direction of the displacement will lead to a reduction of the sediment carrying capacity of the channel, through which the river regains its equilibrium. The whole process is accomplished by the flattening of the bed slope, as suggested by the theories generally accepted...

    After the construction of reservior in an alluvial stream, the equilibrium condition of the downstream channel will be upsetted due to the reduction of sediment supply. This will result in a change in the form and gradient of the channel. The direction of the displacement will lead to a reduction of the sediment carrying capacity of the channel, through which the river regains its equilibrium. The whole process is accomplished by the flattening of the bed slope, as suggested by the theories generally accepted at the present. From a study of the fluvial processes of Colorado River and some other streams, it appears that a decrease in channel gradient is one of the three possibilities only, and should not be regraded as an universal rule. In fact, the change in bed slope below an impounding reservoir depends essentially on the geologic and geographic conditions of that area. It is first considered that the channel width does not change materially in the downstream direction. In many of the sandy rivers, there exists, a layer of gravel or pebble below the finer surface material. The inclination of this layer is generally steeper than the present bed slope. After the releasing of clear water from the reservoir, the surface material is carried away and thereby exposing the coarse layer, first near the dam and gradually extended to the downstream. This will result in an uneven erosion along the direction of the flow, and the steepening of the channel gradient is the consequence of such a process. The Colorado Eiver below the Hoover Dam belongs to this case. If the distribution of the bed material in the downstream, direction is more or less uniform, and if there exists no coarse layer within a finite depth below the bed surface, the bed will be degraded as a whole and the channel gradient remains essentially at its initial value. Results of flume study seem to indicate that such is the case. The Colorado Eiver below both the Parker and the Imperial Dam also belongs to this group. Only when there is a base level within a short distance from the dam which controls the depth of scour at that neighborhood, or if ther is a tributary which brings coarser material into the lower part of the reach, will the channel slope below the dam become flatter. On the other hand, if the river is impounded in a gorge and enters a plain not far away from the dam site, the width of the channel on the alluvial fan becomes progressively wider downstream. It is then possible that the depth of degradation decreases in the downstream direction and the slope becomes flatter. This case is well illustrated by one of the rivers in U. S. S. R. It must be realized that no matter how the channel gradient below an impounding reservoir changes, it is mainly through the coarsening of the bed material which makes the channel regains its equilibrium. Two different types of the coarsening of the bed material can be distinguished from the field data available. One of which is the exposing of a gravel or pebble layer below the present alluvium. As soon as this layer is exposed, there will be a sudden jump in the bed material size, and the stream channel becomes stable again. The othertype of coarsening of bed material takes place continuously and at a much slower rate. One often fails to notice the occurence of such a phenomenon, as the size of the bed material only increases in a relatively small amount. Yet, such a small increase in bed material size results in a much significantly rise of the roughness coefficient, by remolding the sand bars on the bed surface. Both the velocity of the flow and the sediment carrying capacity of the channel will be reduced, and the river gradually re-establishes its equilibrium. It is now possible to calculate such a proeess according to the theories on sediment transport and river roughness. Following the coarsening of the bed material, the down-cutting rate of the stream channel decreases with time. Both the flume studies and field measurements indicate that the relationship between the down-cutting rate and the cumulative time of erosion is an exponential one. This study demonstrates that the fluvial processes of an alluvial channel depend very much on the hydrographic conditions of the basin, of which the stream forms a part. One can't visualize the whole aspect of the problem (?)y studying the fluvial proteases through hydraulics, view-point only.

    冲积河流上修建水库以后,下游河道将失去平衡。河流为了重新建立平衡,必将发生一系列的变化。本文对这—变化的过程,提出了一些新的概念。根据枢纽下游所在地区的地质地理条件,河流的坡降可以有各种不同的变化。坡降的渐趋和缓只是三种可能性中的一种,不能当做普遍规律来看待。河槽的重新建立平衡,主要是通过河床质的粗化作用。河床质的粗化现象具有两种不同的类型。一种是河床表层复盖物因清水冲刷而外移,露出了底下属于另一地质时代的较粗的卵石层,这时河床质的粒径会发生突变。另一种是由于水流的分迭作用,河床质的变化是连续的,徐缓的。在第二种情况下,河床质的粒径虽然变化不多,但是,通过河底沙垅的加多,却可以使曼宁糙率系数有很快的增加,这就使水流的流速降低,挟沙能力减小,河流逐渐建立起新的平衡。随着河床质的渐次粗化,河床的冲刷下切率与时俱減。野外实测结果及水槽试验成果都指出冲刷率与冲刷历时之间成一指数关系。河床质中不能为水流所挟运的颗粒所占百分比愈大,冲刷率下降得愈快,河道重新恢复平衡所需要的时间也愈短。从黄河下游的具体情况来判断,将来修建枢纽以后,下游河道在承受清水冲刷时可能作整体下降,坡降的变化不会很大。黄河下游的河床质虽然很细,同样也...

    冲积河流上修建水库以后,下游河道将失去平衡。河流为了重新建立平衡,必将发生一系列的变化。本文对这—变化的过程,提出了一些新的概念。根据枢纽下游所在地区的地质地理条件,河流的坡降可以有各种不同的变化。坡降的渐趋和缓只是三种可能性中的一种,不能当做普遍规律来看待。河槽的重新建立平衡,主要是通过河床质的粗化作用。河床质的粗化现象具有两种不同的类型。一种是河床表层复盖物因清水冲刷而外移,露出了底下属于另一地质时代的较粗的卵石层,这时河床质的粒径会发生突变。另一种是由于水流的分迭作用,河床质的变化是连续的,徐缓的。在第二种情况下,河床质的粒径虽然变化不多,但是,通过河底沙垅的加多,却可以使曼宁糙率系数有很快的增加,这就使水流的流速降低,挟沙能力减小,河流逐渐建立起新的平衡。随着河床质的渐次粗化,河床的冲刷下切率与时俱減。野外实测结果及水槽试验成果都指出冲刷率与冲刷历时之间成一指数关系。河床质中不能为水流所挟运的颗粒所占百分比愈大,冲刷率下降得愈快,河道重新恢复平衡所需要的时间也愈短。从黄河下游的具体情况来判断,将来修建枢纽以后,下游河道在承受清水冲刷时可能作整体下降,坡降的变化不会很大。黄河下游的河床质虽然很细,同样也存在着粗化的可能。通过粗化作用,可以使河床下切的深度大大减低。

    ~~

    由于电磁铁矽钢片尺寸在加工过程中有不可避免的误差,在加速器按装时,磁轭磁极、中心垫片等元件相对尺寸也不能保证和设计值完全一样,因而使得平衡轨道半径和设计值常常相差几个厘米,再由铁心饱和程度不同,平衡轨道半径亦有不同的变化,因此如果不进行测量和校正,往往得不到应有的γ射线强度。 平衡轨道半径测量仪器是专门设计的,不同的测量方法应用了不同的原理,目前世界上采用的测量方法很多,本文将叙述主要的三种常用测量仪器的工作原理,仪器的设计方法和给出某些实验结果。

    1) The activity rhythms of the spotted bollworms Earias fabia, E. insulana and E. cupreoviridis were studied in Lukiang, Yunnan and Kingchow, Hupeh. The following aspects may be summarized as behavioral similarities in these three species:a) The hatching time of the larvae took place mostly between 6 and 8 o'clock in the morning.b) The larvae fed at daytime and particularly at the periods of 8:50 to 12:00 A.M. and 16:00 to 18:00 P.M.c) Molting took place usually in the night.d) The feeding of the moths did not...

    1) The activity rhythms of the spotted bollworms Earias fabia, E. insulana and E. cupreoviridis were studied in Lukiang, Yunnan and Kingchow, Hupeh. The following aspects may be summarized as behavioral similarities in these three species:a) The hatching time of the larvae took place mostly between 6 and 8 o'clock in the morning.b) The larvae fed at daytime and particularly at the periods of 8:50 to 12:00 A.M. and 16:00 to 18:00 P.M.c) Molting took place usually in the night.d) The feeding of the moths did not begin until one to three days after emergence and they usually fed more greedily after sunset.e) Oviposition took place alternatively with feeding and frequently at the time shortly after sunset. Most eggs were laid on the 6th to 9th days after emergence.f) Mating were not observed until the second day after emergence and it seemed that the most favorable time was shortly before dawn.2) In Lukiang, before 1957 the cotton was cultivated as a single crop a year, and the cotton was sown in the spring. Under this cultivation system, the damage of the spotted bollworms was not very serious. The population of each species of these spotted bollworms ranked according to the following sequence: E. insulana, E. fabia, E. cupreoviridis. After 1958, the cotton cultivation system in Lukiang was changed and the cotton was sown not only in the spring but also in the summer and autumn. There were plenty of ratoon cotton remaining in the field which provided a very favorable condition for the multiplication of the spotted bollworms. The population sizes were ranked in the order : E. fabia, E. insulana, E. cupreoviridis. In 1961, however, the cotton was sown in the spring only, and the ratoon cotton was also controlled in the fields. Then, the population of E. insulana became greatly increased and dominated over the other two species.

    1.鼎点金钢钻各虫期的昼夜活动有一定节律:孵化在白天,以6:00—8:00为主:幼虫取食多在白天,以8:50—12:00和16:00—18:00为主;幼虫蜕皮多在夜间,以20:00—23:00为主;成虫取食和产卵交互进行,日落后2/小时是高峰;交配多在下半夜,以4:00—5:00为主。 成虫一生的取食、交配和产卵,也有其节律性。取食以羽化后第一至第三天为多:交配多在第二天晚上;第六至第九天是产卵高峰。 翠纹金钢钻和埃及金钢钻的活动节律与鼎点金钢钻相似。了解其活动情况,对开展防治有一定参考意义。 2.随着栽培制度的改变,从1957—1962年,在云南省保山潞江棉区翠纹金钢钻和埃及金钢钻种间优势有截然不同的变化:1957年以前,该地是一年一季棉花,棉田中以埃及金钢钻为主Z从1958年开始,改种多季棉(春播、夏播、秋播和再生棉等),到1960年翠纹金钢钻则占绝对优势;1961年又改为一季棉,到1962年埃及金钢钻又复上升为优势种。 云南几个棉区,在同一年内,都表现为在湿季翠纹金钢钻比例大,干季埃及金钢钻又相应增加。 在长江流域大部棉区,棉花生长前期以鼎点金钢钻为主,后期则以翠纹金钢钻为主。

     
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