By contrast, manual pumps have no pressure switch, and must be turned on manually (via an electric switch) prior to when the water is required.
相比之下，手动泵没有压力开关，当需要水的时候必须手动(通过一个电动开关)来开启。
Low or high pressure switch - turns off control circuit when water pressure drops below a set minimum, or above a set maximum.
低压或高压开关- - -用于当水压降低到预先设置的最低值或超过预先设置的最高值时，切断控制电流。
On-demand pumps have a pressure switch that makes the pump build up pressure in the fresh water line.
按需水泵有一个压力开关，使泵在淡水输送线上产生压力。
The pressure meters can give the switch signals of up limit pressure and down limit pressure of water supply.
压力表可发出供水压力下限和上限开关信号。
Oil Pressure Switch, Thermo Switch, Water Temperature Sensor, etc.
机油压力开关，温控开关，水温传感器等。
Fuel Tank Gauge, Fuse Box, Thermo Switch, Water Temp. sending Unit, Oil Pressure Switch, Horn, Sensor and so On.
油箱浮子，保险丝盒，温控开关，水温感应器，油压开关，喇叭，传感器等等。
The high-pressure flushing water pipe is controlled by the time-delay switch.
高压冲水管由延时开关控制。
The results show that all the water level, the atmospheric pressure and the switch of the power supply cannot cause the sudden jump of the observed dat...
研究结果表明，水位、气压、电源切换等因素不会引起体应变仪观测曲线的突跳。
The results show that all the water level, the atmospheric pressure and the switch of the power supply cannot cause the sudden jump of the observed dat...
研究结果表明，水位、气压、电源切换等因素不会引起体应变仪观测曲线的突跳。
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