earth tophr.earthn.地球；泥土；世间earth elliosoid parameter地球椭球参数earth resistivity anomaly地电阻率异常Earth's free oscillationsearth orbiting laboratory地球轨道实验室Earth Buildings in Fujian福建土楼earth-layer propagation地层传播earth resources satellite地球资源卫星Earth observation product遥感科学数据产品earthing electrode current接地板电流earth-stabilized vehicle地球稳定飞行器