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The wear of piercing punch is one of main die lose efficacy.
冲孔凸模磨损是模具失效的主要形式之一。
youdao
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The consequence caused by crane's metal structure to lose efficacy is very serious.
门机金属结构的失效事故，后果往往非常严重。
youdao
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The consequence caused by crane's metal structure to lose efficacy is very serious.
门机金属结构的失效事故，后果往往非常严重。
youdao