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好玩意 |
支管臺(tái),補(bǔ)強(qiáng)管件,用于儀表管道開(kāi)孔及管道開(kāi)孔 |
求教樓主,支管臺(tái)主要的用途是什么 |
haozhong好重啊,材質(zhì)感十足¥ |
樓主 求科普。! |
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