Mass - selection的意思|示意

Responses of main characters of upland cotton to mass selection-mass crossing breeding system were studied.

研究了陆地棉主要性状对混选—混交育种体系的响应。

However, the selection of some garments is based on the body mass index (BMI) to achieve optimum compression.

然而，选择一些服装是根据身体质量指数(BMI)，以实现最佳的压缩。

The genetic quality of the parents can be judged with much greater certainty than in mass selection.

亲本的遗传品质比起混合选择来，能判断得更加确切。

In this paper, the design of blasting scheme, the selection of blasting parameters, charging structure and sound wave measurement in a rock mass were introduced.

本文介绍了爆破方案的设计、爆破参数的选取、装药结构以及岩体中声波的测定。

Through comparison of the results of assorted computation schemes, replacement of soft rock mass and optimum selection of anchoring support as well as feasible excavation sequences are illustrated.

通过多种方案计算和比较，论证了局部软岩置换、支护型式优化、支护参数优化的合理性。

The research on variable mass flowing law in horizontal wellbore is the basis of the productivity prediction, horizontal length selection and completion design optimization of horizontal well.

水平井筒变质量流动规律的研究是水平井产能预测、水平井水平段长度优选以及水平井完井设计优化等的基础。