arch rib的用法和樣例：
例句
- In this paper,lightweight light-expansion concrete is applied to the strengthening of arch bridges.
將自行研究配製的輕質微膨脹混凝土應用於拱肋的加固。 - 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.
以廣東南海三山西橋主橋拱肋吊裝施工控制的具體實踐為例，介紹了該橋施工控制過程中所採用的控制原理和方法。
