pitchingn.[棒球]投掷；（船等）上下颠簸动词pitch的现在分词形式.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 a tune too high把音调定得太高pitch-change-link变距拉杆pitch of screw thread螺距pitch angle deviation俯仰角偏差pitch circle diameter电极圆直径pitchfork bifurcation叉式分岔pitch into each other相互扭打pitch by pitch system逐段攀登法pitch synchronization基音同步pitch angle diffusion投射角扩散