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haulage roadway造句
Theapplicationofboltingspoutingsupportin7244haulageroadwayofnorthNo4miningareaTheapplicationofthegeologyminingconditionandthegob-sideentrysupporttechnologyinhaulageroadwayNo.451faceareintroduced....
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roadway造句
ItwillalsoallowtheroadwaythatrunsontopoftheHooverDamtoclose.Inancienttimes,akinghadaboulderplacedonaroadway.Atollcouldbeplacedonaroadway,raisediftrafficbogsdown,andreducedifthere'ssparecapacity.Batte...