雅思分類詞匯:流體設(shè)備-管道用螺紋
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2.2 螺紋
左螺紋left hand thread
右螺紋 right hand thread
管螺紋 pipe thread
錐管螺紋 taper pipe thread
直管螺紋straight pipe thread
梯形螺紋 trapezoid thread
螺距pitch of thread
粗牙螺紋coarse thread
細(xì)牙螺紋 fine thread
特細(xì)牙螺紋extra fine thread
通長(zhǎng)螺紋full thread
惠氏螺紋whitworth thread
公制螺紋 metric ibread
美國(guó)標(biāo)準(zhǔn)錐管螺紋 American standard taper pipe thread
螺孔 tap