關於roadway的百科

• haulage roadway造句怎麼寫

• Theapplicationofboltingspoutingsupportin7244haulageroadwayofnorthNo4miningareaTheapplicationofthegeologyminingconditionandthegob-sideentrysupporttechnologyinhaulageroadwayNo.451faceareintroduced....
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• roadway造句怎麼寫

• ItwillalsoallowtheroadwaythatrunsontopoftheHooverDamtoclose.Inancienttimes,akinghadaboulderplacedonaroadway.Atollcouldbeplacedonaroadway,raisediftrafficbogsdown,andreducedifthere'ssparecapacity.Batteredandtwisted,theDepartmentofCorrectionsvanlaysoni...
• 2017-03-0823702