Bii o ṣe le yago fun idinku ti pq crawler ni rotari liluho rig Excavator sprocket Foundation ṣiṣẹ Pin awọn ọna ikole tuntun, awọn imọ-ẹrọ tuntun, ohun elo tuntun, awọn aṣa tuntun ati awọn eto imulo tuntun Fun oniṣẹ ẹrọ, ọna pipa pq jẹ iṣoro ti o wọpọ.Fun ohun elo liluho, o jẹ eyiti ko ṣee ṣe th ...
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