LLWL (low-low water level)  低低水位

low-low water level switch  低-低水位开关

mean low low water  平均特低水位; 平均较低低潮位

Severe Water Gushing  特大涌水

awash at low water  低潮时适淹

below low water  低潮水位以下

cementitious materials with low water demand  低需水量胶凝材料

characteristics of low water  枯水特征

cofferdam in low water season  枯期围堰

dead low water  最低低潮面

design high and low water level  设计水位

design low water  还原计算; 设计枯水

Dissipator with low water head  低水头消能工

double low water  双低潮

downstream low water cofferdam  下游低水围堰

extreme low water  最低低潮位; 最低低潮

forecast of low water runoff  枯水径流预报

foundation pit of low water  枯水基坑

Frequency of high-water and low-water  丰枯频率