螺紋

螺纹
luówén
  1. spiral pattern
  2. whorl of fingerprint
  3. thread of screw

CEDICT

  1. (mechanics) thread (of a screw)
  2. thread (of a screw)
  3. whorl (in fingerprint)

Wiktionary

圓柱體螺旋凹凸紋路稱為螺紋」。圓柱表面稱為螺紋」,物體內壁稱為螺紋」。螺釘螺帽基本構造

重編國語辭典

Entry Composition