Concrete repairs under heavy traffic flow remains a difficult problem in highway maintenance.
在高交通流量下砼的修补是公路养护部门的一大难题。
Maintains, tests and repairs diesel motors and the mechanical parts of trucks, buses and other heavy vehicles such as transmissions, suspension, steering and brakes.
维护、测试及维修柴油发动机以及卡车、巴士以及其他重型机车的机械零件,诸如变速箱、悬架、转向和刹车等零部件。
When the call for help comes in, the heavy-duty tow truck is ready to haul any car or truck back for repairs.
当求救有,重型拖车准备长途任何汽车或卡车回修理。
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