screw thread

名词 n.
中文释义

英文释义

名词 n.
  1. A helical ridge formed around a cylinder, or a helical groove formed around the inner wall of a bore, used mostly on fasteners and their connection points.
    — An internal screw thread is cut with a "tap", while external screw threads are cut with a "die".

词形变化

screw threads plural
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