查询词典 variation factor

The comparative research results showed that:(1)Thediurnal variation of the net photosynthetic rates in the aquatic leaves was a "double-peak", with an various "midday-decline", the time of the peak value appeared at about 10:00 A.M. and 13:00 P.M., while that in the xeric leaves was showed with invarious peak value and "midday-decline"; The diurnalvariation of transpiration ratesof both aquatic and xeric leaves appeared as a single-peak, the appearance time of peak value of the latter was earlier than the former and gradually decreased in the afternoon; The stomatal conductances appearance time of both of them were close to that of photosynthesisrate ,reached to the maximum in the morning and then gradually decreased: Diurnal variation of intercellular CO2 concentrationshows that: both aquatic and xeric leaves increased at first, and then exhibit a tendency of ascending within narrow range.(2) The net photosynthetic rates, photosyntheticallyactive radiation, stomatal conductances and transpiration ratesof both two kinds of leaves showed positive correlation, The correlation degree among them was prominent, there was significant negative correlation between The net photosynthetic rates and intercellular CO2 concentration.

研究结果表明：(1)水生叶片净光合速率的日变化曲线呈双峰型，出现明显的&午休&现象，峰值出现在10：00左右和13：00左右，但旱生叶片表现出的峰型和&午休&现象不明显；两种叶片的蒸腾速率日变化曲线表现为明显的单峰型，旱生叶峰值出现时间早于水生叶，中午过后逐渐下降；两种叶片气孔导度峰值出现时间和光合速率相近，均表现为上午升高至最高，随后逐渐下降的趋势；两种叶片胞间二氧化碳浓度日变化表现为：整体上先下降，然后有一上升趋势：(2)两种叶片的光合速率与光合有效辐射、气孔导度、蒸腾速率呈正相关，全部达到显著水平；光合速率与胞间CO2浓度显著负相关。

The results show that the variation of diameter of ATF yarn increases with increasing the over feed of peel filament, but the variation of average diameter decreases. When the polyester FDY is used as core filament, the structure of diacetate composite ATF is looser than the ATF with capron as core filament, and the unevenness of yarn core and outside are also greater. The ATF loops or hairiness mainly centre at the height 0.5 and 1.0 mm, the amount decreasing with the height increasing, with exponential distribution. When the over feed of peel filament enhances, the number of loops or hairiness decreases at the height of 0.5 mm, while other height of loops or hairiness increases.

结果显示：空变丝纱芯直径的变异随皮丝超喂提高而增加，但平均直径的变异却呈下降趋势；以涤纶FDY做芯丝时，二醋酯长丝复合空变丝的结构较芯丝为锦纶的空变丝松散，纱芯和外围不匀程度也相对较大；空变丝丝圈丝弧或毛羽主要集中在高度为0.5mm和1.0mm的位置，其个数随高度的增加而不断减少，基本呈指数分布；皮丝超喂提高时，0.5mm高度的丝圈丝弧或毛羽个数减少，其他高度的丝圈丝弧或毛羽个数则增加。

Objective:To study the geographical variation of morphologic and germination characteristic of different Glycyrrhiza uralensis provenance seeds,approach the geographical variation mode and ecology mechanism,and laid theoretical foundation for districting and allocating of G.uralensis seeds.

中文摘要：目的：研究甘草种源种子形态特征与萌发特性的地理变异规律，探讨地理变异模式和生态学机制，为甘草种子区划和种子调拨奠定理论基础。

The paper studied the water seasonal variation and vertical variation of sandy-leanness farming naked land soil in Xingzheng county Baqian village, Henan Province by soil water menstruated and weather datum analyzed.

通过土壤水分测定结果，结合当地气象资料，对河南省新郑八千乡沙薄土壤水分季节性和垂直性变化进行了分析。

Environmental variation in food resources modifies performance of herbivores, in addition to genetic variation and maternal effects.

食物来源的环境变异改变了食草动物的行为，已影响了遗传变异和母体效应。

In order to explain clearly the variation status of embryo from tetrapoid Robinia pseudoacacia and fully use the variation resource initiated in the sexual reproduction of TRP in the further improvement of TRP, the classification and vitalities of seed embryos from tetraploid Robinia pseudoacacia were studied. The main results are as follow. According to the cotyledon number, color and plumpness, the seed embryos of TRP could be divided into 5 types: YVT (yellow, very replete,2 cotyledons), YMT( yellow, more replete,3 cotyledons ), YRF ( yellow, replete,4 cotyledons ), GNT ( green, no-replete, 2 cotyledons ) and WNT ( white, no-replete, 2 cotyledons ).

为了阐明刺槐同源四倍体种子胚变异状况及充分利用刺槐同源四倍体有性过程创造的变异资源对四倍体刺槐进行遗传改良，研究了刺槐同源四倍体种子胚类型及其生活力特征，主要结论如下：刺槐同源四倍体种子胚按照子叶数量、颜色及饱满程度，可以划分出5个类型：黄二、黄三、黄四、绿二及白二，所有类型种子胚混合平均单胚重量接近二倍体的1/2。

The distribution and variation of plastic zone in the joint were calculated and analyzed during inertia friction welding process. And the variation of deformation rate of plasticized material was also simulated.

计算并分析了惯性摩擦焊接过程中接头塑性区的分布、扩展规律及其与工件轴向缩短的关系，并计算了塑性区金属塑性变形速率的分布和变化情况。

Based on NCEP/NCAR reanalysis data, the structure and variation of Tropical Easterly Jet and its relationship with the distribution of rainfall in Asia and Africa are analyzed. In addition, the Asian summer monsoon indices are reappraised and the secular variation of monsoon is studied.

本文主要是用NCEP/NCAR再分析资料研究了热带东风急流的结构，多尺度变化特征及其与亚非季风降水的关系，并且在此基础上重新评估亚洲夏季风指数及研究季风的长期变化，最后比较了NCEP/NCAR与ERA-40再分析资料的差异。

In frequency domain analysis, HF refects the tension variation of vagus; LF reflects the tension variation of sympathetic nerve.

频阈分析是近年来受到重视的分析方法之一，即对心率变异的速度和幅度进行心率功率谱的分析，亦称心率能谱分析。

This paper reports the varied flowers in syconia of Ficus awkeotsang Makino. We used anatomic observation and statistical analysis to analyze the variation in female and male flowers, mutation rate of different strains and number of varied flowers per syconia in syconia from 24 female and 16 male strains. We also discuss the relation between flower variation and pollinating wasp activity or yield of F. awkeotsang by observing flower development. The results revealed 2 types of flowers in morphology: an umbrella inflorescence shape and solitary.

该文报道了爱玉子花序中存在变异花的现象，并通过花序解剖观测及数据统计分析方法，研究比较雌、雄花序中变异花的类型、不同品系的花序变异率以及单花序中变异花的数量，了解变异花发育过程、变异花与传粉小蜂之间的相互关系，以及变异花对爱玉子产量造成的影响。

He got into race cars, while my father liked go-karts more, so I didn't really pay attention to what Diego was doing, as I was just racing karts.

叔叔开的是跑车，而我父亲更喜欢越野卡丁车，所以我并不太关注Diego在做什么，我仅仅在跑我的卡丁车而已。

She is at present gone to look for the best nectar and ambrosia to regale me this evening.

她今晚为款待我，现在又去准备美酒佳肴去了。