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？

Finished using the vacuum toilet, flush valve pressing the button, toilet tank water level dropped, the vacuum toilet began to water, while liquid level sensor will signal to the air compressor, a vacuum interface valve opens

Finished using vacuum toilet flushing water valve, press the button, and the water in the vacuum toilet began to decline in water level, and at the same time liquid level sensors 1.2.18 signals will be opened to air compressors, vacuum valve interface

Uses the vacuum restroom, presses down flushes the water valve the button, in the bedpan water tank water level drop, the vacuum bedpan starts to enter the water, simultaneously the fluid position sensor passes to the air compressor the signal, the opening vacuum contact surface valve

You finish working with vacuum toilets, flush valve button is pressed, toilet water levels in the water tank, vacuum it starting with the water, and liquid level sensor signals to air compressors, turn on the vacuum interface valve

Uses the vacuum restroom, presses down flushes the water valve the button, in the bedpan water tank water level drop, the vacuum bedpan starts to enter the water, simultaneously the fluid position sensor passes to the air compressor the signal, the opening vacuum contact surface valve