ICS93.080.99CCS R 180813河北省地方标准DB13/T55782022公路全预制装配式双T梁桥技术规范Technical specification for fully prefabricated double T bridges on highways2022-05-31发布2022-07-01实施河北省市场监督管理局发布
copyright@ 2008-2023 wnwk.com网站版权所有
经营许可证编号:浙ICP备2024059924号-2