The column type container is made from transparent or non-transparent materials but the external wall is provided with a waterlevelobservation window or a waterlevel tube.
柱式容器是透明材料制成，或是用不透明材料制成，但外壁设有水位观察窗或水位管。
2
The hydrogeologic conditions of Anqing copper mine are analyzed herein based on data of pit water gushing and observation of groundwater level.
本文利用矿坑突（涌） 水资料及矿区地下水位观测资料对安庆铜矿水文地质条件进行分析和概化。
3
When the system is confined well, the change of observationwaterlevel has a linear relation with water head change.