live knot,light knot,tight knot;swivel,unsound knot
基本解释活节，紧密节
网络释义
1)live knot,light knot,tight knot;swivel,unsound knot,活节，紧密节2)ball head bolt,活节螺栓3)daily used water,生活节水4)Gregorian Calendar,复活节5)pace of living,生活节奏6)loose joint hinge,活节铰链
用法和例句
The experimental method and steps of steel ball head bolt upset forming technology are introduced herein.