Ballut巴吕
balln.球;球状物;炮弹;舞会;愉快的经历;<口>胆量;胡说;(复)睾丸v.使成球状;呈球状;<俚>性交
ball hardness number布氏硬度值
ball-catching view接球位观
ball-jointed screw万向球铰螺杆
ball collecting rate收球率
ball milling process室温球磨
Balling-acid ratio糖度一酸度比率
ball warping machine整经机
ball and ring method球环法
ball course teaching球类教学
ball service machine发球机