strain selective breeding
... 菌种选育 strain improvement 菌种选育 strain selective breeding 地方坐标系 local coordinate system ...
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strain selective breeding
品系选择育种
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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By the experiment of genetics stability, it showed that genetic variation of the strain had already taken place. It was the highest strain of the tylosin of selective breeding after space mutagenesis.
结合菌株传代稳定性试验，说明该菌株已发生了遗传性变异，是经太空诱变后所选育的泰乐菌素高产菌株。
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