Pitchon皮琼
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 on a day随便挑选一个日子
pitch forecast基音周期
pitch of bolts螺栓间距
pitch matching音调匹配
pitching model俯仰模型,相对横轴振动试验模型
pitch patterns音高模式
pitch grouting硬沥青灌浆
pitch attitude俯仰姿态
pitch response俯仰反应