A telescopic supporting column and a floodlight using the same with enhanced maneuverability.
一种操纵性增强的伸缩式支柱和使用该伸缩式支柱的泛光灯。
The present invention relates to an H-shaped steel specialized for the supporting column of the contact net of the electrified railroad and the preparation technique thereof.
本发明涉及一种电气化铁路接触网支柱专用H型钢及其制备工艺。
The present invention relates to an H-shaped steel specialized for the supporting column of the contact net of the electrified railroad and the preparation technique thereof.
本发明涉及一种电气化铁路接触网支柱专用H型钢及其制备工艺。
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