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| the key and important process (即“关键工序”或“重要工序”，该工序包含或输出直接“严重”影响产品的适配件、性能和使用寿命的产品特征或过程特征,“关键工序”或“重要工序”一旦失控，将造成飞机丧失安全性，危害人身安全或为后续的加工、装配、试验或维护等带来严重的困难和不利影响) | |||
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