The multifunctional limit instrument has the function of controlling weight, and the function of up, down position limit.
多功能限制器具有重量控制功能，并且有上、下限位功能。
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。
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。
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