In the hot water system a high water tank with solenoid valve controlled water feeder is used to replace the secondary circulating pump.
热水系统中，采用电磁阀根据水箱液位进行补水，省去二次循环泵。
Make your garden into a bird sanctuary by ensuring there is water, native plants, and possibly a bird feeder.
保证有水、本土植物，有可能的话，配一个喂鸟器，你的花园就能成为一个鸟类保护区。
This paper introduces how to deal with an analog quantum in the S7-200 PLC that be used in water treatment equipment-powder lot feeder .
介绍了S7-200PLC在水处理设备给粉机上的应用，并重点介绍模拟量的处理。
This paper introduces how to deal with an analog quantum in the S7-200 PLC that be used in water treatment equipment-powder lot feeder .
介绍了S7-200PLC在水处理设备给粉机上的应用，并重点介绍模拟量的处理。
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