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水平扩展
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  horizontal spread
     The horizontal spread of the disease was in the stages of pregnancy to heading for early varieties of rice.
     病情的水平扩展速度以孕穗至抽穗期最快,乳熟期几停止;
短句来源
  horizontal-spreading
     The numerical simulation and physical experiments indicate that the motion of sediment clouds can be divided into three stages: accelerating-falling, separating-diffusion and horizontal-spreading. There are marked differences of the clouds area, concentration change and moving velocity of front between each stage.
     数值计算结合物理试验表明,泥沙云团的运动可分为加速下落、分离扩散和水平扩展三个阶段,各阶段的云团面积、浓度变化及前锋速度存在显著差异。
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  horizontal growing
     THE HORIZONTAL GROWING FEATURES OF LIGHTNING
     闪电水平扩展特征
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  “水平扩展”译为未确定词的双语例句
     Suppressive Effect of Bacillus Subtilis B5423-R on the Horizontal and Vertical Spread of Rice Sheath Blight under Greenhouse Conditions
     温室条件下拮抗细菌Bacillus subtilis B5423-R对水稻纹枯病水平扩展和垂直扩展的抑制
短句来源
     On the basis of researched documents,the paper has concluded the major factors of expansion of city-size that they are national and foreign investments and hierarchy of cities by means of regression analysis.
     在分析文献的基础上 ,利用回归分析方法得出 :湖北省城市规模演变的垂直与水平扩展的主要原因是内外投资水平和城市发展政策两大要素 ,其中城市发展政策要素对城市规模分布影响更为突出
短句来源
     On the basis of researched documents, concluded that the major factors of expansion of city-size are national and foreign investments and hierarchy of cities by means of regression analysis.
     在文献研究的基础上 ,利用回归分析方法得出了湖北省城市规模演变的垂直与水平扩展的主要原因是内外投资水平和城市发展政策两大要素 ,特别是城市发展政策要素对城市规模分布影响是突出的 .
短句来源
     The progress rate of maize sheath blight was influenced by the stage ofcorn, the position of sheath and the climate factors.
     分析了玉米纹枯病的水平扩展和垂直扩展与玉米生育期、叶鞘位和气象因素的关系,结果是:该病的发生发展既受玉米生育期、叶鞘位的影响,又与气象因素密切相关。
短句来源
     (3) An ideal dominant species in the early successional stage were annuals with stable seed pool, CR_life strategy, S_regeneration strategy, and strong competitive ability on relatively poor soil, while perennials capable of intensive lateral spread and colonal ability, requiring high nutrient supply, and having C_life strategy would be the dominant species in the subsequent stages.
     3)在演替的早期阶段 ,植物群落优势种往往具有稳定的土壤种子库、CR_生活对策和S_繁殖对策 ,在贫瘠的土壤上具有较强的竞争能力 ,且具有较强的水平扩展能力和克隆繁殖能力 ,C_生活对策、在土壤全N含量较高的生境中具有较强竞争能力的多年生植物 ,在演替中后期占据群落的优势地位。
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      horizontal spread
    rotang showed more horizontal spread compared to C.
          
    The horizontal spread of intracortical inhibition in the visual cortex
          
    The extended dendritic arbor of APCs and ILNs (dorsal spread up to 10-20 μm below surface, horizontal spread up to 1100-1500 μm) enables these cells to sample visual information from a wide area of the visual field.
          
    The rate of local recurrences was related to the horizontal spread of the tumor (insular/circular, largest tumor diameter), to the macroscopic pattern of growth, and to the Dukes classification.
          
    Differences in restriction sites of homologous satellites indicate a continuing rapid horizontal spread of new sequence variants.
          
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      horizontal-spreading
    Although further studies are needed to evaluate the role of these genes in the horizontal-spreading defective phenotype, our data clearly indicate that mutations in these genes do not affect the oncogenicity of MDV.
          


    In the paddy field, the mycelial development of Pellicularia sasakii (Shirai) Wei on the rice plant was closely related to a number of factors especially to the growth stage of the plant and the prevailing climatic condition. Generally, the mycelium developed very scanty before the pregnancy period. Henceforth, the mycelial development was greatly accelerated. The deveIopment reached a maximum at about 10 days before or after the heading. For the early rice varieties the mycelial development ceased at the ripening....

    In the paddy field, the mycelial development of Pellicularia sasakii (Shirai) Wei on the rice plant was closely related to a number of factors especially to the growth stage of the plant and the prevailing climatic condition. Generally, the mycelium developed very scanty before the pregnancy period. Henceforth, the mycelial development was greatly accelerated. The deveIopment reached a maximum at about 10 days before or after the heading. For the early rice varieties the mycelial development ceased at the ripening. For late varieties, it ceased at heading peried owing to the seasonal lowering of temperature in Hunan province. The sclerotial development passed generally four transitional stages being lack of a dorment period. Under the field conditions, the amount of sclerotium developed is directly proportional to the quantity of mycelium alreadly formed. The horizontal spread of the disease was in the stages of pregnancy to heading for early varieties of rice. The vertical spread of the disease was very slow at the tillering stage but accelerated from the heading to milking stages. After which the spread was slowed down porminently. For the late varieties the spread reached a maximum in the heading stage and henceforth slowed down. It is suggested that the effective application of fungicides should be arranged before the accelerated development of the mycelium.

    纹枯病菌絲在田間稻株上的消长受水稻各生育期、及当时气候条件影响很大;一般在孕穗职前菌絲量少,孕穗至乳熟初期分布量大、蔓延速度快;抽穗期后10天达到最高峯。早稻成熟期菌絲停止蔓延或消失;晚稻(尤其連作晚稻)抽穗期后因寒潮或低温而停止蔓延;乳熟期趋于消失。纹枯病菌核的发育一般要通过四个时期,无休眠期。病情的水平扩展速度以孕穗至抽穗期最快,乳熟期几停止;而垂直扩展速度以水稻分蘖期最慢,抽穗至乳熟期最快。矮稈品种2—3天,高稈品种3—5天便可士升一个叶位,乳熟后緩慢。晚稻則以抽穗期最快,抽穗后緩慢,乳熟后病势停滞不前。在水稻易感期(孕穗—抽穗),遇到梅雨的两端低温,职及矮稈品种、多肥、密植,在一定有效菌核量下,是本病流行期、流行程度的关鍵因素。防治适期应以菌絲蔓延前期,卽在分蘖期至孕穗期施药,以杀伤菌絲为主;有必要时可在抽穗期再施药一次,保护剑叶,以抑制菌核形成、兼杀菌絲为主。如对矮稈品种、多肥栽培的水稻,于分蘖期施药保护是很必要的。

    On the basis of crustal structure,focal mechanism,seismicity and geophysical research,the authors suggest that in North China exists gravitational lateral spreading of the crustal substances mainly from SW to NE.In this paper,fundamental characteristics of such a mass spreading as well as its relation to recent tectonic motion and seismic activity are presented.It is shown that gravity is to contribute to recent tectonic motion and seismic activity in this area.

    根据地壳结构、震源机制解、地震活动及地球物理探测等资料的综合分析,作者认为,在华北存在着由南西往北东为主的地壳物质重力水平扩展作用。本文分析了华北地壳物质重力水平扩展运动的基本特征及其对区内现代构造运动与地震活动的制约关系。

    The fatigue crack propagation in steel 16Mn under various heattreatmentconditions has been studied in this paper. The threshold value △A_(th) andthe requirement of mechanics for the transition from stage Ⅱ_a to Ⅱ_bin fatigue crack propagation has been analysed in view of plasticdeformation constraint, ferrite grain size and microscopic fracture me-chanism. The significance of fatigue crack propagation parameters inengineering application has also been discussed. It has been identifiedthat the threshold value...

    The fatigue crack propagation in steel 16Mn under various heattreatmentconditions has been studied in this paper. The threshold value △A_(th) andthe requirement of mechanics for the transition from stage Ⅱ_a to Ⅱ_bin fatigue crack propagation has been analysed in view of plasticdeformation constraint, ferrite grain size and microscopic fracture me-chanism. The significance of fatigue crack propagation parameters inengineering application has also been discussed. It has been identifiedthat the threshold value △K_(th) rises with increasing ferrite grain size.However, When ferrite grain is coarsened, its resistance to fatigue crackpropagation in stage Ⅱ_b will be decreased, therefore, the rates offatigue crack propagation at higher stress intensity levels will be greatlyincreased. It is recommended that when △K_(th) is chosen as an importantdesign index, the restriction of grain size can be relaxed in a certainextent. It is suggested that in fatigue failure analysis the estimations ofstress intensity level and fatigue crack propagation rate by fatiguestriations should be handled carefully.

    本文研究了16Mn钢的疲劳裂缝扩展行为,结合晶粒尺寸和微观断裂机理从变形约束的角度对门槛值△k_(th)和Ⅱ_a→Ⅱ_b转折的力学条件进行了分析,并对疲劳裂缝扩展参数的工程意义进行了讨论。研究确定△k_(th)随铁素体晶粒尺寸的增大而提高。但晶粒粗化会降低疲劳裂纹扩展抗力,增加在较高应力强度水平的扩展速度。研究指出,对于以△k_(th)作为主要设计指标的情况,对材料晶粒度要求可以适当放宽,在疲劳失效分析工作中应用疲劳条纹间距估计应力强度水平和宏观裂纹扩展速度应取审慎态度。

     
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