round push broach是什么意思

用法例句

By using the procedure of multi layer build up welding, the knob removing tool used on K1000 soldering machine for rails is developed.

研制了采用多层堆焊工艺的K10 0 0钢轨焊机推瘤刀 ,介绍了该推瘤刀的材料选择、结构特点和加工要