英语词汇“maintenance line”的翻译、意思、用法、释义-英汉汉英双解词典

单词	maintenance line
释义	maintenance line ˈmeintinənslain 短语¹¹⁴⁴⁶⁷⁺⁴保持系
随便看	underground geothermal water underground glory hole method underground glory-hole method underground goaf underground goal Underground gold mine underground gold treasury underground government underground grain depot underground granary underground grotto group underground group cavities underground gushing underground handwritten copies underground hangar underground haulage undergroun d haulage underground haulageunderground transport undergroun d haulageunderground transport underground hauling of coal underground hazard underground headquarter underground headstock gear underground heated pipeline underground heat energy