punch h checking 穿孔校验
You'd better let the dog alone, 'growled Mr Heathcliff in unison, checking fiercer demonstrations with a punch of his foot.
“你最好别理这只狗，”希刺克厉夫先生以同样的音调咆哮着，跺一下脚来警告它。
Strength checking formula for blanking punch in current documents have been reviewed and the anti-bending ability of blanking punch is discussed.
查阅和分析现有文献中给出的冲裁凸模强度校核公式，针对凸模抗压弯能力的强度校核问题进行了讨论。
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