percussion tool meaning in English

冲击工具
冲击钻具

The use of caseless propellant charges as the power source for projectiles and for explosive percussion tools such as nailguns is now established .
目前，用无壳药柱作为弹丸及火药推进器（如铆钉枪）的能源已被认定。
Driving spindle ends for portable hand , impact , air electric tools percussion tools excluded
便携式手动碰撞式气动和电动工具
The authors studied the structural design and the working principle of two new types of water - saving percussion tools , water - saving hydro percussive tools and pneumatic steel ball percussion tools
从分析干旱缺水地区节水型冲击器的设计思路出发，对两种新型节水冲击器风动钢球冲击器和液动冲击器的结构设计、工作原理进行了研究。
The results showed that the application of the two new types of water - saving percussion tools can not only saved a lot of water during the course of drilling , but also improved drilling efficiency greatly , and had developing prospect in drought and water - scarce area
结果表明，这两种新型节水冲击器的应用不仅能够大量节约钻探过程中的用水量，而且能够大幅度提高钻探效率，在干旱缺水地区具有广泛推广应用前景。