arch rib的用法和样例：
例句
- In this paper,lightweight light-expansion concrete is applied to the strengthening of arch bridges.
将自行研究配制的轻质微膨胀混凝土应用于拱肋的加固。 - Based on the construction control for the installation of main spans arch ribs in Nanhai Sanshan West Bridge, the principles and methods of the construction control are introduced.
以广东南海三山西桥主桥拱肋吊装施工控制的具体实践为例，介绍了该桥施工控制过程中所采用的控制原理和方法。
