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1·The results show, by the adjusting of water conservancy projects, the mean water level of most lakes increase and become steady. However, some discharge lakes are opposite.

研究结果表明，由于水利设施的调节作用，大部分湖泊平均水位提高，水位变化趋于平缓，但部分河道型湖泊情况正好相反，水位下降且变化幅度较以前增大。

2·At first, boiler water level control system and the mean of alarm and fault detection adopted universally are introduced.

首先介绍了火电厂热工锅炉汽包水位控制系统以及现阶段普遍采取的报警和故障检测方法。

3·The total quota of water use in different level of water saving was put forward based on regression analysis, probability estimation analysis, advanced quadratic mean method and geometric mean method.

通过逐步回归法、概率测算法、二次平均先进法和简单几何平均法得到北京市宾馆不同节水水平下综合用水定额值；

4·The effect of mean sea level rise is shown by the standing tide wave in the shallow Water areas of the continental shelf.

属于大陆边缘海域的中国黄海，海平面上升影响的显著性，通过驻波作用明显地表现出来。

5·The mean urinary fluoride level of children increased with the elevation of drinking water fluoride level.

儿童尿氟均值随其所饮用水源含氟量升高而升高。