earthdin地震earthn.地球；泥土；世间earth-synchronous station地球同步站Earth Observations Programs地球观测计划earth-baseplate resonance地面-底板共振earth satellite observation地球卫星观测Earth Buildings in Yongding永定土楼earth leakage current meter通地漏泄电流计Earth Sciences Review Group地球科学评论组earth synchronous satellite地球同步卫星earth faults line selection接地故障选线earth's crust rise and fall干呕