back-cross

常见例句

The self-cross and back-cross of F1 progenies also result in a successive distribution in body type among various crosses.
F1自交和回交，结果显示：不同组合后代的体型也呈连续分布。
It is possible to manipulate and to introgrese target genes in crops by the selection based on molecular markers together with classical back-cross breeding method.
分子标记与育种结合，可能以较高精度和速度鉴定，转移和整合目的基因，也可用于以对数量性状的操作。
Also, the flux density at the back yoke can be found from this flux, and the back yoke cross-section area.
也就是说，导磁机壳的磁通密度可以由该磁通和导磁机壳的截面积计算得到。
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And there's been some efforts cross-culturally, to go back to the question this young man asked before looking at cross-cultural differences in toilet training and weaning, which are really big differences, to see if they correspond in any interesting way to personality differences.
回到刚才那位同学提出的问题，确实也已经有些跨文化的研究试图探究,在如厕训练和断奶上的跨文化差异,这些差异是非常大的，而这些研究的目的，是为了看看这些跨文化上的差异,是否与人格差异存在着某种联系。
耶鲁公开课 - 心理学导论课程节选
It's a more powerful method than something called a cross-sectional study, and I'll come back in a later lecture and talk about these in more detail, but a cross-sectional study means you're taking a snapshot of a population of people at one time.
这种方法比所谓的横断面研究更加有效,我将在以后的课中,再仔细讨论这个问题,但横断面研究是指,你一次记录下一群人的状况
耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

It is financial protectionism, as banks are forced by their governments to focus on lending at home and to cut back on cross-border flows.
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