The safe situation classification of reactor is second class. The detection peroid is 6 years.
反应器安全状况等级为二级，检定周期定为6年。
Part Two. An inquiry into the origin of social culture leading to moral indifference in the changing peroid of Chinese society.
第二部分：探讨中国社会转型时期“道德冷漠”现象形成的社会文化根源。
Discuss in small groups and each group should make up a new dialogue about the weather, using the language points learnt in this peroid.
把所学的新语言项目与旧知识联系起来，自由创编对话，并课堂展示，达到语言交际运用的目的。
In comparison with commercial SFM, it can maintain growth of CHO cell for much longer peroid and the expressing level of HBsAg is higher too.
该培养基与商品化的无血清培养基比较，能够使细胞生长维持较长的时间，表达产物分泌量也相对较高。
In comparison with commercial SFM, it can maintain growth of CHO cell for much longer peroid and the expressing level of HBsAg is higher too.
该培养基与商品化的无血清培养基比较，能够使细胞生长维持较长的时间，表达产物分泌量也相对较高。
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