earth tophr.
earthn.地球;泥土;世间
earth station technology地面站技术
earth and water pressure水土压力
earth-moving equipment推土设备,运土设备,堆土设备
earth-resistance meter地电阻表
earth observation system地球观察系统
earth-coverage antenna覆球天线
earth reckfill cofferdam土石围堰
earth leakage protection接地漏电保护
earth resource satellite[计] 地球资源卫星
Earth volume calculation土石方计算