5278| 14
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1寸14牙,,M26的內(nèi)六角螺栓,,怎么標(biāo)注 |
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點(diǎn)評(píng)
你聽(tīng)不懂大伙的意思嗎,,不存在兩種標(biāo)準(zhǔn)混在一個(gè)螺栓的情況
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