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characteristic variation
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  性状变异
     27 morphological traits of them were estimated with characteristic variation, canonical correlation and cluster analysis. Genetic relationship of 37 varieties were evaluated by RAPD analysis. The consistency of genetic diversity among the varieties was discussed according to genetic similarity coefficient and genetic distance in order to establish the foundation for soybean breeding and genetic improvement.
     本研究以来自我国不同生态类型及从国外引进的37份大豆栽培种为材料,对37份材料的27个表型性状进行了性状变异、典范相关和聚类分析,并在上述研究的基础上,对37份材料进行RAPD分析,从分子水平推断它们之间的亲缘关系,并进一步探讨用遗传相似系数与遗传距离确定不同品种遗传差异的一致性程度,进而为大豆育种和遗传改良奠定基础。
短句来源
     Theauthor reported the algebraic quantity characteristic variation conditions of M2 after the treatment of 60Co radiation to the China common wild rice,analysed the genetic control of the main quantity characteristics of the wild rice and thus provided the experimental genetic basis for the origin and evolution of the corn cultivated rice.
     本文报道,中国普遍野生稻经60Co射线处理后M2代数量性状变异情况,分析野生稻主要数量性状的遗传调控,为普通栽培稻的起源演化提供实验遗传学依据。
短句来源
  特征变化
     Glottographic Study of Controlled Vibration of Canine Vocal Folds in Vivo Ⅱ. Vibration Patterns and Characteristic variation of Glottograms
     活体犬声带控制振动的声门图研究——Ⅱ、振动模式与声门图特征变化
短句来源
     Research on the Characteristic Variation of the Land Cover and Landscape Pattern in Chang' An River Basin
     宁陕县长安河流域土地覆被与景观格局特征变化研究
短句来源
     On the other hand, a significantly characteristic variation of α valuse obtained by single station and three events occurred, and the errors are smaller.
     而单台三震拟合的α值有明显的特征变化,并且误差范围显著减小。
短句来源
     Using new strain instruments,the variations in strain of surveying points on the rock sample surface in rupture preparation processare are observed. The results show there are characteristic variations of mutation and disturbance in several to tens percent of second before the failure besides long-trend variation and characteristic variation several seconds before the failure.
     采用新型应变仪观测岩样在破裂孕育过程中岩样表面测点的应变变化 ,结果除了长趋势变化、破坏前几秒的特征变化外 ,在破坏前百分之几秒至十分之几秒还有突变和扰动等特征变化
短句来源
  “characteristic variation”译为未确定词的双语例句
     An additional double parameter FCM showed a characteristic variation in HNE1 which was consistent with the cell cycle oscillation and the peak level expressed in G 0/G 1 phase and the lowest level in the S phase.
     cyclinD1在鼻咽癌细胞系中的表达呈细胞周期依赖性 ,在G0 /G1期表达最高 ,S期及G2 /M期下降 ,但仍可检测到。
短句来源
     Study on Characteristic Variation of Half-sib Pollination Offspring of Alnus Formosana during Seedling Period
     台湾桤木半同胞授粉子代苗期性状变异的研究
短句来源
     In this method, the dynamic characteristic variation of the welding arc in actual welding process is simulated by using IGBT as the rheostat and is evaluated by the dynamic electronic parameters of arc welding power sources. Technique research on the designed electronic analog load was then carried out.
     该方法采用IGBT作为可变电阻来模拟实际焊接过程中电弧的动态变化 ,通过弧焊电源的动态电参数来进行综合评判 ,并对所设计的电子模拟负载进行了工艺实验研究 .
短句来源
     A comparison of the expression patterns in the cell lines, positive or negative in the latent membrane protein 1 (LMP1) encoded by Epstein Barr virus, revealed that the expression of D Type cyclin proteins might be increased by EBV LMP1. The abundance of these proteins showed characteristic variation consistent with a cell cycle dependent oscillation and the peak levels expressed in G1 as analyzed by double parameter flow cytometry.
     流式细胞仪双参数的结果显示 ,cyclinD1在鼻咽癌细胞系中的表达呈细胞周期依赖性 ,且呈周期性振荡 ,在G1期表达最高 ,S期下降 ,但是S期及G2 /M期仍可检测到cyclinD1的表达。
短句来源
     Biological Characteristic Variation of Purified Pea Ferritin(Fer) Transgenic Rice
     豌豆铁蛋白转基因水稻纯系重要生物学特性的变异
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  characteristic variation
The photographs also portray the characteristic variation in vapor flow pattern caused by altering chamber pressure.
      
The photographs also protray the characteristic variation in vapor flow pattern caused by altering chamber pressure.
      
The wetting angle is reduced when one passes from iron to cobalt and nickel, which corresponds to the characteristic variation in θ in the wetting by the iron subgroup metals of pure refractory-metal carbides.
      
The results also clearly reflect the expected characteristic variation of these effects on the rotational molecular motions in going from formamide to NMF and DMF.
      
Method of elastic characteristic variation in the problem of a limiting load
      
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In order to study the characteristic variations of the spectra of microearthquake waves preceding larger earthquake occurrences, a series of microearthquakes in Xiker region of Xinjang was observed and investigated by using a selected band-pass seis-mograph, which is composed of 6 filtering channels with central frequencies 6 cps, 8.1 cps, 15.7 cps, 30.0 cps, 50.0 cps. 75.0 cps respectively. The preliminary results show that the amplitudes of the spectra of microearthquake P waves in the frequency range...

In order to study the characteristic variations of the spectra of microearthquake waves preceding larger earthquake occurrences, a series of microearthquakes in Xiker region of Xinjang was observed and investigated by using a selected band-pass seis-mograph, which is composed of 6 filtering channels with central frequencies 6 cps, 8.1 cps, 15.7 cps, 30.0 cps, 50.0 cps. 75.0 cps respectively. The preliminary results show that the amplitudes of the spectra of microearthquake P waves in the frequency range 10 cps-60 cps increase before the occurrences of larger earthquakes (ML≥3.2), and decrease after them within the corresponding frequency ranges. The confidence level is more than 70% in general.The physical implication of the recorded effect of the selected band-pass seismo-graph is analysed in brief, and the causes of variation of the microearthquake wave spectra before larger earthquakes are discussed very concisely.

为探索大地震发生前孕震区内微震辐射波谱的变化,在新疆西克尔地区,用选频测震仪对微震波谱进行了观测和研究。选频测震仪分为6个频道,各道中心频率分别为6.0周、8.1周、15.7周、30.0周、50.0周、75.0周。初步结果表明:在一个地震系列中,随着临近较强地震(M_L≥3.2)的发生,微震P波在10周—60周频率范围内的谱值增高,其置信水平一般在70%以上。较强地震发生以后,微震P波在相应频率范围内的谱值下降。 文中还简要地分析了选频地震记录的物理意义,并对较强地震前,微震辐射波谱变化的原因作了初步说明。

In order to seek for the earthquake precursors, the characteristic variations of microseisms preceding several larger earthquake occurrences are analysed in brief. It is found that amplitude of microseism decreased abnormally at a station near the epicenter (Δ≈20km) about a few days before the occurrence of the Haicheng (海城) earthquake (M=7.3) on February 4, 1975. Preliminary analysis shows also that the phenomena such as the variation of the direction of approach of microseisms and the correlation...

In order to seek for the earthquake precursors, the characteristic variations of microseisms preceding several larger earthquake occurrences are analysed in brief. It is found that amplitude of microseism decreased abnormally at a station near the epicenter (Δ≈20km) about a few days before the occurrence of the Haicheng (海城) earthquake (M=7.3) on February 4, 1975. Preliminary analysis shows also that the phenomena such as the variation of the direction of approach of microseisms and the correlation between different components of the microseisms before large earthquakes are worthy of note.

为探索地震的前兆,对一些较大地震前地脉动特征的变化作了简要的分析,发现1975年2月4日的海城7.3级地震前数天,近震中的地震台上(△≈20公里),脉动振幅异常减小;初步分析还表明,大震发生前,脉动方向以及脉动各分量相关系数的变化等现象也是值得引起注意的。

In this paper, taking the Yushu (榆树), Jilin province, earthquake (M = 5%) of April 13, 1960 as on example, the characteristic variations of microseism (Period; 3s-12s) recorded at the Changchun (长春) seismic station (Δ≈ 150 km) before the earthquake are analysed. The results show that (1) the horizontal amplitude of mic-roseisms increased abnormally, since August, 1959. (2) during the same period, on the ANS -AEW diagram. The observed predominant direction nearly coincides with the direction of the line...

In this paper, taking the Yushu (榆树), Jilin province, earthquake (M = 5%) of April 13, 1960 as on example, the characteristic variations of microseism (Period; 3s-12s) recorded at the Changchun (长春) seismic station (Δ≈ 150 km) before the earthquake are analysed. The results show that (1) the horizontal amplitude of mic-roseisms increased abnormally, since August, 1959. (2) during the same period, on the ANS -AEW diagram. The observed predominant direction nearly coincides with the direction of the line connecting the station with the epicenter.It is probable, that such anomalies of the microseisms are related to the process of development of the Yiishu (榆树) earthquake source.

本文以1960年4月13日吉林榆树地震(M=5(3/4))为例,分析了震前长春台(△≈150公里)脉动(周期为3—12秒)的变化特征.结果表明:(1)自1959年8月开始,脉动水平向振幅异常增高.(2)同时期内,在A_(NS)—A_(EW)图上,脉动测点的优势分布方向大致与震中相对于长春台的方向一致.这种脉动异常变化可能与榆树地震的孕育过程有关。

 
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