bridge opening短语¹⁸⁰⁰⁹⁸⁺¹ 基本例句 桥孔 It is an important procedure of re- fill up at platform back in bridge opening. 桥涵的台背回填是一道至关重要的工序。 cnki According to the investigation data of designing for bridge opening, the bridge opening length were analyzed. 根据桥孔调查资料，对桥孔长度进行了全面分析。 cnki