15974| 29
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管螺紋中的2分到底是幾毫米 |
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點(diǎn)評(píng)
不好意思,一時(shí)腦子沒轉(zhuǎn)過彎來,你說的對(duì)。常說的二分管、四分管、六分管對(duì)應(yīng)的是2/8、4/8、6/8。謝謝指正!
2分管內(nèi)也只有一寸管的1/4
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