valleyn.山谷;溪谷;流域
valley project流域规划
Valley Silicon硅谷
valley pattern河谷型
valley meander河谷曲流
valley voltage谷值电压
valley glaciers谷冰川
valley crossing跨谷测量
valley - city河谷型城市
valley flashing天沟泛水
valley shifting河谷迁移,谷道迁移