P 开头单词
pitch in 投入；作出贡献
pitch following up amplifier [交通运输工程]俯仰跟踪放大器
pitch down 首倾，俯冲
pitch diameter [机] 节圆直径
pitch detection and pitch contour [计算机科学技术]基音检测和基音轨迹
pitch curve 啮合曲线；分度曲线
pitch control 树脂障碍控制；[计] 行距控制；[机] 节距控制；音调控制
pitch cone radius [机械工程]节圆锥半径
pitch cone distance [经济学]节锥母线长度
pitch cone angle 节锥螺距角
pitch cone [机] 节锥；分圆锥；[机] 分度锥
pitch circle measurement [计算机科学技术]节圆检测
pitch circle diameter 电极圆直径，节圆直径
pitch circle 齿节圆，节距圆
pitch change control rod [机械工程]变距操纵杆