antigas kit是什么意思

用法例句

An anti-water return device installed in this piping system will provide a good solution and meanwhile lower the costs.

普通快滤池的冲洗方式常采用气水反冲洗,但由于反冲洗阀关闭不严,导致反冲洗管路系统进水,加装气冲防回水装置可以解决气冲管路的回水问题,且效果好、成本低。