The influences of the separating force and axial force of the piercing point bar on the wall thickness of the shell pierced, and on its lateral uniformity are analyzed quantitatively.
定量分析了穿孔轧制力和顶头轴向力对毛管壁厚及其横向均匀性的影响。
Ear spirals, from a piercing point of view, are no different than normal piercings.
像这种耳环，从整体看是很美的。
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