runnel造句
1、Standardforqualityinspectionandassessmentofrailwayrunnelengineering2、Theyusedwaterproofcementtopreventwaterfromseepingthroughtheroofoftherunnel.3、Ancientgirderscreakandgroan,ropestightenandthenat...
1、Standardforqualityinspectionandassessmentofrailwayrunnelengineering2、Theyusedwaterproofcementtopreventwaterfromseepingthroughtheroofoftherunnel.3、Ancientgirderscreakandgroan,ropestightenandthenat...