结果，甚而区域被服从对前填水泥的化学制品在跟随挖掘的相对地短时间以后陈列了地水流入的坚固率。
As a result, even zones subjected to chemical pre-grouting exhibited a substantial rate of groundwater inflow after a relatively short time following excavation.
背压率大于80%，能排不凝结气体，膜盒坚固，使用寿命长，维修方便，使用范围很广。
Back pressure higher than 80%, to row non-condensing gas, diaphragm solid, long life, easy maintenance, using a wide range.
坚固耐用、故障率低、采用进口不锈钢以及西德日本进口电子元件；
Solid and durable with low trouble rate with stainless steel materials and electronic organs imported from Japan.
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