常见例句双语例句This paper introduces the construction techniques of U shaped caisson of main pier of Huanghe bridge on Yingu expressway.本文介绍银古高速公路三标黄河特大桥（拓宽工程）主墩承台U型沉井施工技术，重点介绍沉井下沉施工及纠偏方法。 返回 caisson pier