立式钻床
The mechanical and electrical improvement to Z5030A upright drill press is introduced in brief and the way how to realize automatic orientation by PLC is also illustrated in details.
简单介绍了对原立式钻床Z5030A进行的机械改进和电气改进,详细阐述了利用PLC给工件自动定位的方法。
A Research on Drilling on vibrating upright Drilling Machine with Twist Drill
立式振动钻床上麻花钻切削性能的研究
Soldier's drill position, standing upright with feet together and arms stretched downwards ( used esp in the expressions shown) Shooting positions for the rifle event are standing position, kneeling position and prone position.
立正的姿势(尤用于以下示例)步枪项目射击姿势有立姿、姿和卧姿。
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