With reference to the gravity survey, this paper describes the schemes of control network layout used with global positioning system (GPS) technique for Donghai Bridge project over sea.

结合重力测量，介绍利用GPS技术进行东海大桥跨海工程控制网的布设技术方案。

youdao

In the autumn of 1993, O'Reilly launched Global Network Navigator (GNN), an on-line magazine and Internet reference guide.

ECONOMIST: From the archive