valleyn.山谷;溪谷;流域
valley in valley谷中谷,叠谷
valley migration河谷迁移,谷道迁移
Valley extraction峡谷检测
valley paddy soil山谷水稻土
valley topography河谷地形
valley land space河谷用地空间
valley floodplain河谷洪泛平原
valley harnessing流域治理
valley cu-rrent[电] 谷电流
valley attenuation谷值衰减