earthdin地震
earthn.地球;泥土;世间
earth-space communication地空通信
Earth connection technology接地技术
earth background brightness地面背景亮度
earth dam with sloping core斜墙土坝
earth pressure distribution土压力分布
Earthworms can contract .蚯蚓能缩小。
Earth Resources Consultants地面资源顾问
earth exploration satellite地球勘探卫星
earth-retaining dado pile挡土护壁桩
earth fault of single phase单线接地