pitchupn.上仰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 amplitude纵向振幅,纵摇幅度pitch detection音调提取pitching mashie短球棒pitch tolerance螺距公差(螺纹),节距公差(齿轮)pitch smoothing基音平滑pitch of baffle折流板间距Pitch parameter节锥参数pitch of spring弹程pitching motion纵向运动pitch indicator螺距指示器,俯仰指示器