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\ nitrobenzene的例句（nitrobenzene在句子中的用法）

nitrobenzene的例句（nitrobenzene在句子中的用法）

Low cost 3, 4 - difluoro nitrobenzene was prepared from 2, 4 - dinitrochlorobenzene by two - step fluorination. 二硝基氯苯经二步氟化反应,制得低成本3, 4- 二氟硝基苯.
The method for producing 4 - aminodiphenylamine from nitrobenzene and aniline was an ideal method at the present. 从硝基苯和苯胺直接合成4氨基二苯胺是当前一种较为理想的方法.

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