Gas-operated action气动式
gas-operated corer气动式取心器
gas-operated pump气动泵
gas-operated actions导气室
gas-operated reloading气动式
gas-operated brazing appliance气动硬焊装置
Gas-operated blow torches气动喷灯
soldering blow pipes gas-operated气动焊接吹管
Natural Gas-Operated Diaphragm Pumps天然气动力隔膜泵