用PCF8583作为定时器，在由89c52构成的室内供暖计费系统中，实现预定时开关供暖阀门部分的功能。
It used the PCF8583 as timers to realize the function of prearranging the heating valve 's on-off time in the house heating expenses system composed of 89c52.
固定时可使用地热供暖托架在基础灰浆地板上用钉子固定。
Use saddles for piping to fix pipe driving nails into the foundation floor.
固定时可使用地热供暖托架在基础灰浆地板上用钉子固定。
Use saddles for piping to fix pipe driving nails into the foundation floor.
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