submersible sewage pump

Experimental study on the performance of immerged sewage source heat pump systems in variable conditions in summer;

沉浸式污水源热泵系统夏季变工况性能实验研究

Taking the treatment of dam foundation in Satai Reservoir as for example,this paper discussed the construction preparation,soaking presedimentation,assessment of collapsibility and precaution.

浸水预沉法是处理湿陷性黄土的一种主要措施,该法投资少,效果好。