The appropriate reaction condition were established.
确定了较好的合成反应条件。
Based on the experimental data an appropriate reaction mechanism was suggested.
根据实验数据，提出了合理的反应机理。
The appropriate cleaning equipment was designed on the basis of the structure of reaction vessel.
根据反应釜的结构特点设计出了合适的清洗设备。
This is a very natural reaction, but is not appropriate to use in cycling uphill.
这是很自然的反应，可是用在骑车上坡却不适当。
It is necessary to choose an appropriate chemical catalyst for this reaction system.
选择一种合适的化学催化剂很有必要。
It is necessary to choose an appropriate chemical catalyst for this reaction system.
选择一种合适的化学催化剂很有必要。
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