precautionary step

基本解释预防步骤

网络释义

1)precautionary step,预防步骤2)process,predefined,预定步骤3)preparation step,预处理步骤4)engine running preventive maintenance procedure,发动机运转预防性保养步骤5)The method of four steps,四步骤预测法6)three steps in pretreatment,预处理三步骤

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