B 開(kāi)頭單詞
ball-point penetrator [能源科學(xué)技術(shù)]球體貫入度儀
ball-point pen n. 圓珠筆
ball-point 圓珠筆
ball-planting n.帶土栽植
ball-plant 土球包扎植物
ball-pivot n.球樞
ball-picker n.拾球人
ball-pen ink [能源科學(xué)技術(shù)]圓珠筆油墨[經(jīng)濟(jì)學(xué)]圓珠筆墨水
ball-pen n.圓珠筆
ball-park 球場(chǎng)的
ball-pane hammer [機(jī)械工程]球頭錘
ball-of-fat n. 羊脂球（法國(guó)作家莫泊桑的短篇小說(shuō)）
ball-millingtime 球磨時(shí)間
ball-milling efficiency [化學(xué)]研磨效率
ball-milling 球磨
ball-mill 球磨機(jī)
ball-locking finger [能源科學(xué)技術(shù)]鎖緊球指針
ball-lightning n.球狀閃電