... 反轮回洗濯钻杆 reverse out the drill pipe 泥浆水技能员 mud technician 起重机爬杆 crane boom ...
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To make a maintenance appointment, does a client need to wait at home for a 6-hour appointment window, have the technician show up late, and track mud through her freshly-cleaned carpet, no wonder she called to argue about the bill.
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