the application of composite steel tunnel support
复合钢隧道支护的应用
以上为机器翻译结果，长、整句建议使用 人工翻译 。
The application of composite steel tunnel support technique to tunnel collapse handle at the Zhenlong Hydropower Station, Shimian and its applicable conditions as well as perspective are set forth.
介绍了组合钢支撑技术在石棉镇龙电站隧洞塌方中的应用情况 ，同时探索出了该项技术的适用条件和推广前景。
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