pipe spacer
... pipe sleeve 管式套筒 pipe spacer 定距管 pipe stand 管架 ...
distance tube
... distance to the horizon from height of observer 测者视地平距离 distance tube 定距管 distance washer 间隔垫圈 ...
distance sink tube
基本释义 ... 定距侧刃 pitch punch 定距管 distance tube ; spacer ; pipe spacer ; distancesinktube 定距冲头 spacing punch ...