单词：testcrosses
vt. 对…作测交
testcross的用法和样例：
例句
- From the testcross performance data, selections, based on an index, were made for intermating of each of the four groups.根据测交种数据，利用指数方法进行选择，方法是对每个杂种优势群进行相互交配。
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