西影井水位自1974—1978年三次井溢后,1989年9月以来又出现了一次大起大落的特异变化。很多学者都十分关注这罕见的现象,并认为是......

The Xiying River, one of eight tributaries of the Shiyang River, located at Lenglongling, east Qilian Mountain, is forme......