礦用變電所 的英文怎麼說
中文拼音 [kuàngyòngbiàndiànsuǒ]
礦用變電所
英文
substating-
The discovery of the colossal magnetoresistance ( cmr ) in hole - doped perovskite manganites ra1 - xmxmno3 ( ra is a trivalent rare - earth ion and m is a metal ion ) has attracted much attention since 1989 due to not only its technological applications in magnetic recording and sensor, but also the effect of the strong correlation concerning metal - insulator transition in the field of basic research. since then, several physics models have been suggested to explain the mechanism of cmr. however, the exact mechanism of cmr remains to be done
自1989年在摻雜鈣鈦礦型錳氧化物ra _ （ 1 - x ） m _ xmno _ 3 （其中m為金屬離子， ra為三價稀土離子）中發現龐磁電阻（ cmr ）以來由於其在磁記錄、磁傳感器等方面潛在的應用前景，以及金屬?絕緣體相變等所涉及的強關聯效應，使該類化合物吸引了物理學界的廣泛注意。We developed the power system of electric drill based on dc - ac. the system use the technique of spwm frequency cowersation control. it changed th d. c provided by trolly wire of d. c motor into stable a. c adopted igbt and driving circuit adopted high speed module of exb840
針對當前我國煤礦電鉆電源的使用現狀，提出研製dc - ac變換的電鉆電源系統，該電源系統直接利用spwm變頻控制技術，將井下直流電機車的架空線所提供的直流電轉變成頻率是50hz的1 . 27v的穩定交流電。Based on the analysis for high voltage switchbox below 35kv, the dissertation designs an intelligence supervisory equipment of high voltage switchbox which is fit for large - scale mine substation
本文在對35kv以下的高壓開關櫃現狀分析的基礎上，設計和研製出一套適合大型煤礦變電所適用的智能化高壓開關櫃監控裝置。The dc distributor shelf play a important role in transformer substation, power plant, big and middle plants etc. it supply mainly to the controled, protected and communicate equipment, automechanism, manipulaor and adjusted machine. the same time it may as accident lighting power supply, so its performance and reliability affect directly the running safely of whole power supplying system
直流電源屏作為供電電源在變電站、發電廠、大中型廠礦企業等供電系統中佔有很重要的地位，主要用於向控制、保護、通信設備、自動裝置操作機械和調節機械的傳動機構供電，同時還可以作為獨立的事故照明電源，所以其性能及可靠性直接影響到整個供電系統的正常安全運行。分享友人