acme thread form的意思|示意

梯形螺纹 ... barrel (cylindric) cam 圆柱式凸轮步进运动机构 acme thread form 梯形螺纹 air-cushion eject-rod 气垫顶杆 ...

梯形罗纹 ... acid-prrof coating耐酸涂料 acknowledged rule of technology公认的手艺划定规矩 acme thread form梯形罗纹 ...

齿顶圆 ... 齿顶圆（顶圆） tip circle 梯形螺纹，齿顶圆 acme thread form 齿冠圆,齿顶圆 addendum circle ...