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研究代谢调节突变株的选育方法。
A study is made on the method for breeding mutant strain of metabolic regulation.
说明激光辐照是碱性淀粉酶菌株有效的选育方法。
It proves that laser irradiation is an effective method for breeding of alkaline amylase producing strain.
介绍了俄罗斯五个优良毛用型绵羊品种的选育方法和产毛性能。
The breeding methods and wool - ability of five kinds of wool - produced Russian sheep were introduced.
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