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 stability纵摆稳定性
pitch autopilot俯仰自动驾驶仪
pitch it strong大吹牛皮
pitch poisoning沥青中毒
pitch dimension踏步斜长
pitch of stairs楼梯坡度
pitching chisel用于雕塑的方头钢凿
pitch increment节距增量
pitching moment俯仰力矩
pitchprediction基频预测