活销相关论文
The screw with left-hand and right-hand thread, and the shuttle-shaped sliding pin are the oasic elements on a screw-typ......
<正> 活销在绞纲机的排绳装置中作为往复运动的主要传力构件,其圆弧工作面与螺杆螺槽侧壁的接触为线接触.复杂的受力条件,使它极易......