We are looking at a problem and trying to solve it and it seems there is a deadend , an “ aporia ” 我们考虑一个问题并试图解决它的时候，似乎走进了死胡同，一个“难点” 。
2.
The 2300 direct operated reducing valve is designed for deadend water service where the flow is intermittent and changes rapidly , as on domestic water systems 系列2300直接操作减压阀适用于室内水系统流量有间歇性变化和变化迅速的终端水应用场合。
您当前位置：