测交组合在河南夏玉米区表现一般。
对南方砂梨12个品种不同的授粉组合进行测交。
The pollination combinations of 12 sand-pear cultivars of southern China were tested for pollination efficiency in this experiment.
改良群体产量与相应测交产量平均值之间呈正相关。
There existed a positive correlation between the yield of population and the average yield of test cross.
回交、兄妹交及大多数品种测交后代的不育株率约占50%左右。
Most of its leslcross F1S and progenies of its backcrosses and biparental mating segregated statistically 50% sterile plants.
本文结合目前广泛使用全站仪，对公路、主交匝道等线路工程进行曲线测设。
The coordinate computing and setting out of spatial curve is introduced combining with the current using total station widely in the high road and spatial bridges.
本文给出了交流电力测功器的变频装置的一种结构，交-直电压源型变流器。
In this paper, the structure of A-C dynamometer's inverters has been given.
通过测量阻力元件两端的动态压力、流速，得到交变流动情况下动态压力与质量流量之间振幅和相位关系，从而得到所测元件的交变流动阻力特性。
The oscillating flow characteristics of the test section are obtained by the analysis of the amplitude and phase shift of the velocity and the pressure wave.
通过测量阻力元件两端的动态压力、流速，得到交变流动情况下动态压力与质量流量之间振幅和相位关系，从而得到所测元件的交变流动阻力特性。
The oscillating flow characteristics of the test section are obtained by the analysis of the amplitude and phase shift of the velocity and the pressure wave.
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