A high activity Cu base catalyst has been prepared for methanol synthesis by one step parallel flow coprecipitating method.
用一步并流共沉淀法制备了一种高活性合成甲醇铜基催化剂。
The synthesis of ethyl cellulose was studied by one-step method, with toluene as diluent and orthogonal test was adopted.
采用正交实验的方法，以甲苯为稀释剂，探讨了乙基纤维素一步法合成的工艺条件。
This method is rioted for Its one step synthesis of simplicity and higher yield.
这是一种方法简便、收率较高的一步合成法。
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