back-cross

基本解釋

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，結果顯示：不同組合后代的體型也呈連續(xù)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.
分子標記與育種結合，可能以較高精度和速度鑒定，轉移和整合目的基因，也可用于以對數(shù)量性狀的操作。
Also, the flux density at the back yoke can be found from this flux, and the back yoke cross-section area.
也就是說，導磁機殼的磁通密度可以由該磁通和導磁機殼的截面積計算得到。
racktom.com

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.
回到剛才那位同學提出的問題，確實也已經(jīng)有些跨文化的研究試圖探究,在如廁訓練和斷奶上的跨文化差異,這些差異是非常大的，而這些研究的目的，是為了看看這些跨文化上的差異,是否與人格差異存在著某種聯(lián)系。
耶魯公開課 - 心理學導論課程節(jié)選
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.
這種方法比所謂的橫斷面研究更加有效,我將在以后的課中,再仔細討論這個問題,但橫斷面研究是指,你一次記錄下一群人的狀況
耶魯公開課 - 關于食物的心理學、生物學和政治學課程節(jié)選

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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