ball point needle 圓頭針ball plunger 定位球塞ball plug gauge [交通運(yùn)輸工程]球塞規(guī)ball playing skill 控球技術(shù)；控救技術(shù)ball player ball pivot 鋼球支樞；球面樞軸ball pin 球頭銷；球形硝ball picker [體育]拾球童ball pen [輕] 圓珠筆ball pein hammer 圓頭鐵錘ball peen 圓錘頭ball park ball out speed [機(jī)械工程]出球速度ball out 痛罵；訓(xùn)斥ball on up-slope [體育]斜上坡球ball of the foot 跖球ball of foot 跖球 腳趾肚ball of fire ball nut 滾珠螺母，球狀螺母ball number [體育]球號(hào)