Trial-manufacture of auto-transformation unit with double blower and power in heading face;
掘进工作面双风机双电源自动转换装置
The technical innovation of electric-pneumatic transducer and electric-pneumatic valve positioner is close related with the innovation of electric-pneumatic transfer device.
电气阀门转换器、定位器的技术革新与电气转换装置的革新紧密相关。
In the light of the single power defect of photoelectric conversion device in relay protection and the necessity and advantage of the dual power combining with experiment,the theory and practice principle for using the dual power to enhance the channel reliability probability in p.
针对继电保护光电转换装置单电源供电的缺陷以及双电源供电方式的必要性、优越性结合实验进行了阐述,望能为继电保护光电转换装置采用双电源供电提高通道可靠性提供理论及实践依据。