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 of grooves槽间距
pitching posture投球姿势
pitch controller变桨距机构
pitch perception音高知觉
pitch deposition树脂沉积
pitch cone angle节锥角
pitch-recorder音调记录器,音波记录器
pitch one's tent
pitch estimation基因估计
pitch-on metal涂沥青薄钢板