基本解釋定位球塞英漢例句雙語(yǔ)例句Ball plungers;球頭柱塞；Moreover, the ball plungers (6) are positioned near the piston top dead center, at which the piston ring is positioned.另外，球塞（6）設(shè)置在靠近活塞上死點(diǎn)的活塞環(huán)所在的部位。ip.comball plunger更多例句