pitchn.球场;程度;音调;推销;投掷;街头商贩摊位;沥青;树脂;松脂v.投;颠簸;搭帐篷;定调;推销;用沥青覆盖
pitch uponadj.选定(决定)
pitch gage螺距规
pitch disc节径盘
pitchwheeln.相互啮合的齿轮
pitchblackadj.漆黑的
pitch lock桨距锁
pitch edge叼口边
pitchinginn.吃刀(切口;空刀距离)
pitch face斜凿面
pitch time节拍时间