因为任何对状况的预先判断都可能出现错误。
Because we can easily get it wrong by prejudging a situation.
如果你有一个预先存在的医疗状况,请教医生后使用。
If you have a pre-existing medical condition, consult a doctor before use.
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.
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