1) added second line
增二线
1.
Technical comparisons in railway added second line of subgrade protection
铁路增二线台后路基防护技术比较
2) construction of the second line
增建二线
1.
Research purposes: Reconstruction of Tuole Railway Station was a key controlled project of emergency engineering for construction of the second line between Lhasa and Golmud of Qinghai-Tibet Railway.
研究目的:新建托勒车站是西格段增建二线应急工程重点控制工程,本文通过对托勒车站施工的回顾,旨在为类似工程提供借鉴经验。
4) double railway track laying
增建二线铺轨
5) two wire repeater
二线式增音机
补充资料:二线
①战争中的第二道防线。②比喻不负有直接领导责任的地位:退居~。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
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