electric traction line造句更新時間：2026-06-11 16:26:10復制 electric traction line造句 1、For investigating the air pollution in double line railway tunnel by electric traction, we tested the air condition in Jundushan tunnel.(為了解電力牽引的雙線鐵路運營隧道空氣污染狀況，選擇軍都山隧道進行現場測試。) Hao86.com
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