The Beijing Fundamental Bench Mark (BFBM) is an important reference datum in the elevation control network in China.
北京水准原点是我国高程控制网中的一个重要基准点。
Long distance river-crossing leveling is an important job in the elevation control of the long-span bridge construction.
长距离跨河水准测量是特大跨径桥梁建设中高程控制的一项重要内容。
We drew out the elevation data from elevation control points, and made use of the regular square grid to display three-dimensional terrain.
我们从高程控制点中提取高程数据，利用规则矩形网格模型实现了三维地貌的显示。
The invention relates to a final elevation control method for open caisson construction, belonging to the technical field of open caisson construction.
本发明涉及一种沉井工程最终高程控制方法。本发明属于沉井工程技术领域。
Furthermore, the concrete construction with single and double constraint formwork, joint management, elevation control, and concrete maintenance are introduced in detail.
重点介绍了单约束、双约束模板混凝土施工，节点处理，屋面混凝土标高控制，混凝土养护等施工工艺。
Furthermore, the concrete construction with single and double constraint formwork, joint management, elevation control, and concrete maintenance are introduced in detail.
重点介绍了单约束、双约束模板混凝土施工，节点处理，屋面混凝土标高控制，混凝土养护等施工工艺。
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