These and many other commercial free data sources use the spherical Mercator data projection (identified by European Petroleum Survey Group [EPSG] code 900913).
这二者以及很多其他的商业的免费数据源都会使用球形的 Mercator 数据投影（由 European Petroleum Survey Group [EPSG] code 900913 标识）。
2
The authors make an introduction to the plan of improving the safety of the butadiene spherical tank group and its engineering practice.
本文介绍了丁二烯球罐群安全隐患的清除方案及工程实施。
3
Companies group and customers group are made up of spherical supply chain.