A target function for design of hydraulic handdrills is brought forward in this paper.
提出了设计手持式液压凿岩机的目标函数。
2
Founders of the polar circle diving center are making holes in the ice with help of handdrills and augers.
极地圈中心的创建者正在冰里用钻孔机钻孔。
3
The ball still seems to pop out of his hands a lot. Perhaps he should work on those handdrills a little more. I thought he was better last March in that area then he has been this season.