portable optical fiber cable是什么意思

用法例句

This paper introduces the features of a five-span unequally spaced arched bridge in Hefei City, Dongtu Road Arched Bridge, and the construction method by appling the mobile mast cable crane is presented.

文章介绍了合肥市当涂路拱桥的设计和施工特点,着重阐述了采用大吨位移动式桅杆缆索吊施工方法以及拱肋预制和拼装程序,技术可行,经济合理,施工周期短,保证了当涂路拱桥工程质量和要求的工期。