換向電鍵 的英文怎麼說
中文拼音 [huànxiàngdiànjiàn]
換向電鍵
英文
reverse keyboard-
The fusing quality can be effected easily due to sever changes of commutator ' s temperature during the process
換向器與各繞組之間的焊接質量是保證微電機轉子電學性能的關鍵所在。This paper uses " virtual neutral point method " to measure the " zero crossing ", then the soft deal " zero crossing " to get the six key position to commutate
本文採用虛擬中點的方法來識別反電勢過零點，然後對過零點進行處理得到無刷電機換向的六個關鍵位置。Along with the coming of computer age, digitizing, broad banding and intelligentization became the trends of future communication progress. users put more expectations to communication service. access network connecting local exchange with user is an important part of telecom network
隨著通信與計算機整合時代的到來，數字化、寬帶化和智能化已成為未來通信發展的方向，人類社會對電信業務從質量到業務種類都提出越來越高的要求，而接入網作為電信網的重要組成部分，連接本地交換機與用戶，是整個電信網的毛細血管和瓶頸，實現數字化、寬帶化和業務綜合化的關鍵。The prototype test results indicate : voltage mode and current mode ac - ac mode ac / ac converters with high frequency link have the advantages such as high frequency electrical isolation. simple topology, two - stage power conversions, high power density, bidirectional power flow, good line current waveform, no audio noise, high converting efficiency, and high input power factor etc. this kind of converter lay the key technical foundation on new type regulated sinusoidal ac power supply, electronic transformer, ac regulator, and wave converter etc
試驗表明，這類變換器具有高頻電氣隔離、電路拓撲簡潔、兩級功率變換（ lfac hfac lfac ） 、功率密度高、雙向功率流、無音頻噪音、變換效率高、網側功率因數高等優點。為新一代正弦交流穩壓器、電子變壓器、交流調壓器、同頻波形變換器的實現奠定了關鍵技術基礎。The softswitch is the core technology of the next generation network, for it can be the core to offer calling, control and service for voice service, data service and video service in the next generation network, and it also plays the key role in the evolvement of scn to the psn
軟交換是下一代網路的核心技術，因為它可以成為下一代分組網路中為語音業務、數據業務和視頻業務提供呼叫、控制和業務的核心，同時也是電路交換網向分組網演進的關鍵。The paper is mainly engaged in researches on power converter, the key component in fess, and it should be a bi - directional power transformation instrument
本文的主要任務是對飛輪儲能系統的關鍵組件? ?電力轉換器進行研究，它需要被設計為一個雙向功率流變換裝置。The sensing for rotor flux position of bldc motor is the key of commutation, so this paper expatiates on three different methods to sense rotor flux position and compares their advantage and disadvantage
因為無位置傳感器直流無刷電機的轉子位置檢測是其準確換向的關鍵所在，所以本文對幾種不同的轉子位置檢測方法進行了闡述，並比較了其優缺點，希望能有一點借鑒的意義。Redesign and realize the clear up and upfront work of data source according to new demands is unbearable on waste of time and manpower. the article described development and analysis status of ubisp ( united business information service platform ) system, analyzed the extract strategy and optimized algorithm of etl rules, discussed the data capacity and granularity selection in dw modeling, raised an idea of how to sub divide dimension table and fact table ' s granularity by compound primary key aimed at above question
本論文介紹了該電信公司經營分析數據倉庫系統的開發與研究現狀，分析了etl規則的抽取策略和優化演算法，討論了數據倉庫建模中的數據量估算和粒度選擇，並針對上面的問題提出了利用復合主鍵和橫表縱表之間的轉換實現維表和事實表粒度向下細分的思想，即在不修改源數據提供系統的情況下，最大限度的利用已有的數據實現新的需求。Its test results indicate : voltage mode inverters with high frequency link have the advantages such as high frequency electrical isolation, simple topology, two - stage power conversions, high power density, bidirectional power flow, good line current waveform, low audio noise, high converting efficiency, and high input power factor etc. this kind of converter lay the key technical foundation on new type high power density, high efficiency and low cost asi
設計的1kva270v 10 % dc / 115v400hzac單極性移相控制雙向電壓源高頻環節逆變器原理試驗表明，這類逆變器具有高頻電氣隔離、電路拓撲簡潔、兩級功率變換（ lfac / hfac / lfac ） 、功率密度高、雙向功率流、音頻噪音低、變換效率高、網側功率因數高等優點，為新一代高功率密度、高變換效率、低成本航空靜止變流器奠定了關鍵技術基礎。分享友人