hand punch是什么意思

用法例句

For the symmetric wire bent elements of small production and low accuracy, the manual revolving bending die can be used to improve economical efficiency.

多品种、小批量、大尺寸的对称线材制件 ,采用手动绕弯模弯曲能提高经济效益。

The method uses the valve of opening degree with soft ware method by editting sevaral wires in manual operation device as basic statistics of adaptive fuzzy control to get the non disturbance conversion.

介绍了一种工业自动控制中实用的无扰动切换方法，此方法是通过修改手动操作器中的少量几条线，用软件方法采集阀门开度，作为自适应模糊控制的基值，从而达到无扰动切换的目

A manual cleaning machine of multifunction has been designed and manufactured.

设计制作了一种多功能手动清洁车,既可用于清除道路的积雪,又可以清扫、擦拭地面。

Structure characteristic and performance analyse of oblique rack slippery pieces type manual chuck;

斜齿滑块式手动卡盘的结构特点和性能分析