Slightly visual defects of product or package.
产品或包装的轻微的视觉缺陷。
After the various visual defects during drilling processes were analyzed, the importance of drilling with compressive pre stress was presented.
根据复合构件加工中的各种缺陷，分析了采用预压应力钻削对改善表面加工质量的重要性。
After the various visual defects during drilling processes were analyzed, the importance of drilling with compressive pre stress was presented.
根据复合构件加工中的各种缺陷，分析了采用预压应力钻削对改善表面加工质量的重要性。
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