您要查找的是不是：
- permanent water level 稳定水位, 永久水位
- The wind, temperature, water level, etc has dropped considerably. 风势已减弱了、 温度已下降了、 水平面已降低了很多。
- Make sure to top up the water level so that is always remains the same. 一定要把水注满使水平高度总保持不变。
- The water level in some lakes may vary greatly. 某些湖泊的水位变动极大。
- The remote measurement of water level in ECR. 集控室水位遥测。
- Pumps work to keep the water level down. 水泵工作,使水位下降。
- As the water level sinks the stones are exposed . 水落石出。
- The water level has been raised by 1.1 metres. 水位提高了1.;1米。
- Adjustable float for optimum water level control. 通过调节浮球能保持最佳水位。
- Hydrosoft is a modified co-polyester fiber with permanent water transport effect. No hydrophilic needed after dyeing. 为运用聚酯改质技术，赋予纤维永久性吸湿排汗的新合纤。无需使用吸湿排汗剂，就有极佳的吸湿排汗效果.
- Heavy rains caused the rise of the water level. 暴雨导致水位上涨。
- The drought depressed the water level in the reservoirs. 干旱使水库的水面降低
- The water level rises rapidly during monsoon season. 雨季水平面上升很快。
- Fill the generator with fresh water above the normal water level. 给发生器注入正常水平线以上的清水。
- Eventually, the rain stopped and the water level gradually fell. 不过终于雨停了,然后慢慢的水位开始降低,直到有一天没水啦!
- The annual migration to permanent water holes of vast herds of herbivores (wildebeest, gazelles and zebras), followed by their predators, is one of the most impressive natural events in the world. 每年，当它们为寻找水源而迁徙时，总有食肉动物伴随它们同行，向人们展现了另一个时代，是世界上最壮观的景象之一。
- The wind, temperature,water level,etc has dropped considerably. 风势已减弱了、温度已下降了、水平面已降低了很多.
- The wind, temperature,water level,etc.has dropped considerably. 风势已减弱了、温度已下降了、水平面已降低了很多.
- When water levels rise, flooding results. 水位上升，就会发生洪水。
- The peak ground water level was analyzed on simulation. 仿真分析了地下水位的峰值。
