在计划的实施及检讨时，要预先掌握关键性问题，不能因琐碎的工作，而影响了应该做的重要工作。
While the plan is conducted and checked, the manager has to grasp key issues in advance. Do not affect any important tasks due to trivial ones.
结合风险评价理论，采用评点法对潜油电泵系统进行了风险等级划分，从而可以使企业预先掌握潜油电泵系统的运行状况。
And in order to make companies know situation of working of the electric submersible pumping system, we evaluated the risk rank of the electric submersible pumping system by evaluating-point approach.
在工厂里，工人应该学会掌握操作机器预先设定的技术，这样才能生产出合格的货物和商品。
The workers in the factories should learn to master the technique of operating the machines beforehand and in this way can they produce the qualified goods and merchandises.
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