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
pitching vessel分割罐
pitch of drills钻头轴距
pitch Mechanism变距机构
pitched roofing斜屋面
pitch structure音高组织
pitch variation斜度偏差
pitching period纵摇周期
pitch stiffness纵向稳定性
pitch disparity音调差异
pitch propeller可变距螺旋桨