The pressure meters can give the switch signals of up limit pressure and downlimit pressure of water supply.
压力表可发出供水压力下限和上限开关信号。
2
According to this logic, the way to increase efficiency end drive down unit costs is to limit product variety and produce a standardized product in large volumes.
据此逻辑，提高效率而压缩单位成本的方法就是限定产品种类，并且进行标准化批量生产。
3
Some properties allow you to enter free text, but others provide a more appropriate interface; the property for the layout manages USES a drop-down list to limit you to valid layout managers.