铁路固定装置。通讯和信号装置架空线路用器材。钢筋混凝土电杆支撑卡箍。

Fixed railway installations. equipment for overhead telecommunication and signalling lines. plate for securing cross - pieces to reinforced concrete posts.

youdao

铁路固定装置。通讯和信号装置架空线路用器材。钢筋混凝土电杆支撑卡箍。

Fixed railway installations. equipment for overhead telecommunication and signalling lines. bracing collars for reinforced concrete posts.

youdao

铁路固定设备。通讯和信号装置架空线路用器材。钢筋混凝土电杆上横梁固定用板。

Fixed railway installations. equipment for overhead telecommunication and signalling lines. plate for securing cross - pieces to reinforced concrete posts.

youdao