Ballesn.巴利斯
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 head governor飞球调节器
ball-float valve[机] 球阀
ball-peen hammer圆头锤
ball loading valve球形排药阀
ball-drop method落球法
ball pendulum test球摆试验
ball playing skill控球技术
ball park estimaten.大致的猜测
ball burst testing钢球式顶破强力试验
ball-park figure约略的估计