常見例句雙語(yǔ)例句The invention relates to a reduction gearbox of an electric tool, in particular to an assembling structure of double-speed impact electric drill gear reduction gearbox.本發(fā)明涉及一種電動(dòng)工具的減速箱，具躰地說(shuō)是一種雙速?zèng)_擊電鑽齒輪減 速箱的裝配結(jié)搆。ip.com 返回 double-reduction gearbox