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随着经济和科学技术的发展,各企业设备的自动化程度越来越高,投入使用了大量性能对于电压质量非常敏感的基于计算机的控制设备和电子装置,而这些设备一旦不能正常工作将会对生
With the economic and scientific and technological development, the equipment automation of enterprises is getting higher and higher, and a great deal of computer-based control devices and electronic devices whose performance is very sensitive to voltage quality have been put into use, and once these devices can not work properly, Health