pitchyadj.沥青的;涂沥青的;沥青似的;漆黑的
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 vt.沥青,音高 ?
pitch chain校准链,节链,短环链
pitch meter螺距测量器
pitch point节点,齿轮啮合节点
pitch adder俯仰角加法器
pitch brace活塞拉杆
pitch names音名
pitch stick螺距调整杆
pitch hinge变距铰
pitched out投坏球