... 袋部位缺陷 defects in pocket 领部位缺陷 defects in collar 袖子部位缺陷 defects in sleeve ...
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... 发中间紧 collar outer edge too loose 发部位缺点 defects in collar 挨套结 bar tack ...
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·2,447,543篇论文数据，部分数据来源于NoteExpress
The manufactured defects on the inside of the drilling collar as stress concentration location play an important part in the initiation of the cracks.
工件内表面存在刀痕等机加工缺陷，造成应力集中促进了裂纹的形式。
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