To mutate breeding with Penicillium chrysogenum in existing production in order to obtain stable high yield strain.

对现有生产中的产黄青霉进行育种突变，以获得稳定的高产菌株。

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Existing high-yield "junk" bonds will fall to zero, and new ones will no longer be issued.

现有的高收益“垃圾”债券将降至零，并有新的将不再印发。

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Objective: To mutate breeding with Penicillium chrysogenum in existing production in order to obtain stable high yield strain.

前言： 目的：对现生产用产黄青霉菌诱变育种以获得稳定高产菌株。

youdao

With borrowing rates for high-yield issuers so low, it is not surprising to again see heavy activity geared toward refinancing existing debt.

FORBES: Connect