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1·The effects of reactant ratio, temperature , time, and solvents on the reaction were exam-ined.

讨论了物料配比、温度、反应时间、溶剂用量等因素对反应的影响。

2·The content of trace elements in eighteen herbs for clearing away heat and toxic material was detem-ined by atom-absorption spectrometry.

采用原子吸收分光光度法测定了十八种清热解毒中草药中人体必需微量元素含量。

(1)in on参与，参加

(1)in between在中间

(1)in a big way大规模地，彻底地

(1)in so far as至于

(1)be in at在场，参与

(1)be in with someone◎与…相处得好；跟…亲近