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厥屁股需要底蘊(yùn)嗎?厥著能玩互聯(lián)網(wǎng)嗎,?哈哈,, |
點(diǎn)評(píng)
哈哈,妙啊
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點(diǎn)評(píng)
要懂大型柴油機(jī),各種變速器,,大型螺桿泵或者大的隔膜泵,,設(shè)計(jì)整個(gè)管路的‘上山’,‘下山’,,‘流不滿(mǎn)’,,液壓沖擊,等等問(wèn)題,,還要懂大型管道焊接,,檢測(cè),監(jiān)測(cè),,等等
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