In this paper, the failure of pinpunch was analyzed and optimized based on FEA and PVD, according to failure mechanism of fracture and wear of pinpunch.
本文主要利用FEA及PVD技术，针对细小凸模的断裂和磨损两种失效形式，进行失效分析与优化。
2
If a purchaser fails to punch in the correct PIN at the checkout, the transaction gets rejected.
如果购买者未能在结帐时输入正确的密码，交易将不能进行。
3
Of course, to thwart the scheme you could simply place your hand over the entire keypad to impart heat to every key after you punch in your PIN.