求翻译：使用完真空厕所，按下冲洗水阀的按钮，便器水箱中的水位下降，真空便器开始进水，同时液位传感器将信号传给空气压缩机，开启真空界面阀是什么意思？

Using finished vacuum toilet, by Xia washing valve of button, will Manager tank in the of water level decline, vacuum will Manager began intake, while liquid bit sensor will signal to air compressor, opened vacuum interface valve--pneumatic sewage butterfly valve, stool and water in negative pressure role Xia through vacuum sewage tube Department entered vacuum collection tank, pumping suction process about for 1~2s; pumping suction process completed Hou, pneumatic sewage butterfly valve close, partition will Manager and vacuum tube network, guarantee vacuum system of stability, washing valve delay Hou stop water supply, makes will Manager bottom left has small water, thus completed once work cycle. System back to its original state until the next start, the entire washing process control about 5s