the quality of dynamic water level observation  观测质量

changing of water level of Yangtze river  长江水位变化

water level of water tower  水塔水位

appraisal of water quality of the underground wate  地下水质评价

acceptable quality level of process average AQL  过程平均上限值AQL

analyses of water level influence  柯萨奇B组病毒(CVB); 水位影响分析

annual variation of water level  多年动态

ANOMALY OF WATER LEVEL  水位异常

beginning water level of spring flood  起调水位

big changing of water level  大水位变化

Bottom level of water  底层水

Change of Water Level  水头变化

CHANGES OF WATER LEVEL  水位变化

coefficient of the depth and water level of soil l  土层埋深水位系数

coefficient of the depth and water level of soil layers  土层埋深水位系数

communication device of water level  水位遥报仪

control of water level  水位控制

controlling water level of groundwater reservoir  地下水库控制开采水位

correction of water level  水位修正; 水位改正