頻率轉換 的英文怎麼說

中文拼音 [bīnlǜzhuǎnhuàn]
頻率轉換 英文
frequency conversion
  • 頻 : Ⅰ形容詞（次數多） frequent Ⅱ副詞（屢次） frequently; repeatedly Ⅲ名詞1 [物理學] （物體每秒鐘振動...
  • 率 : 率名詞（比值） rate; ratio; proportion
  • 轉 : 轉構詞成分。
  • 換 : 動詞1. （給人東西同時從他那裡取得別的東西） exchange; barter; trade 2. （變換; 更換） change 3. （兌換） exchange; cash
  • 頻率 : frequency; rate
  • 轉換 : change; transform; convert; switch
  1. At present, people usually use birefrigence and quasi - phase - matching methods to achieve higher effiency in the process of conversion. a significant advantage of quasi - phase - matching method is that the interaction is occurred through the largest element of the x ( 2 ) tensor ; the period of optical superlattice can be designed randomly, and any interaction can be matched without walk - off angle ; they are fitted to be used in frequency conversion of lower power especially. the quasi - phase - matching method has some advantages over birefrigence method, improving the efficiency of frequency conversion ; the range of frequency conversion covers its whole transperant wavelength

    由於準相位匹配技術有其獨特的優勢，可以利用非線性光學晶體的最大二階極化張量，如ppln 、 pplt 、 ppktp用的非線性極化張量都是d _ （ 33 ） ，其有效非線性系數高出普通非線性光學介質（如bbo 、 lbo 、 ktp ）一個數量級，而且可以人為靈活設計調制周期，通過周期設計其頻率變換范圍可以覆蓋準相位匹配介質的整個透明波段，選擇無走離效應，解決了常規pm難以解決的問題，拓寬了非線性晶體的應用范圍，極大地提高了頻率轉換效率，已成為非線性光學材料和固體激光器的研究熱點之一。
  2. Study on frequency conversion problem in storm sampling

    暴雨選樣間的頻率轉換問題探討
  3. To quiken the frequency switching speed, a method to aid capturing the frequency by presetting voltage is adopted, which produces ideal effect

    在加快頻率轉換速度方面，採用了預置電壓和鑒頻鑒相相結合的輔助頻率捕獲方法，並取得了理想的效果。
  4. High performance voltage - to - frequencey converter

    高精度電壓頻率轉換器晶元設計
  5. Investigation of an integrated current - frequency converter circuit

    頻率轉換器電路的研究
  6. Voltage to frequency convertor, v i

    電壓頻率轉換
  7. Voltage - to - frequency converter

    電壓頻率轉換器
  8. Analysis on dynamic characteristics of voltage - frequency converter circuit

    電壓一頻率轉換電路的動態特性分析及求解
  9. Fse frequency shifter effect

    頻率轉換效果
  10. An electronic device that converts one frequency of a radio signal to another

    變頻器將無線電訊號從一種頻率轉換成另一種頻率的電子裝置
  11. Semiconductor integrated circuits. detail specification for type jb537 voltage - to - frequency converter

    半導體集成電路. jb537型電壓頻率轉換器詳細規范
  12. Based on the dds technology, the waveform generator first stored data in high speed ram, then used dac to synthesize waveform by the data. many waveforms could then be generated easily. besides, the wave generator could get high performance on frequence resolution and stability, phase continuum, relative bandwidth etc. the dds technology was widely used in frequence synthesis field

    基於dds技術的波形發生器以高速存儲器作為波形數據查找表、通過高速d / a轉換器對存儲器的波形進行合成，可以靈活產生多種波形，同時具有頻率解析度高、頻率穩定性好、頻率轉換快、相位連續性好以及相對帶寬較寬等特點。
  13. In chapter 3, we studied the effect of gaussian transverse profile for the driving and laser fields on lasing without population inversion ( lwi ) in a closed v - type system and an open v - type system. moreover, we discussed also the effect of the unsaturated gain coefficient, the cavity - damping rate, the ratio of the atomic injection rates and atomic exit rate on the corresponding systems. in chapter 4, we mainly discussed the effect of doppler broadening on the gain, dispersion and the frequency up - conversion of the open v - type lwi system and compared the differences and the same between the open system and the corresponding closed system

    發現： （ 1 ）在考慮doppler展寬的情況下，通過選取合適的實驗室條件（比如合適的原子環境溫度等）可得到合適doppler展寬值，從而使系統獲得最佳增益； （ 2 ）要想實現系統的頻率上轉換，同時又要獲得足夠強的無反轉激光增益，則系統頻率轉換比不能選取的太大； （ 3 ）對于開放系統，比較小的粒子注入速率比與退出速率對產生無反轉激光是有利碩士學位論文摘要的： （ 4 ）由於dopp1oy展寬的存在，當探測場與驅動場的傳播方向相反時，增益在探測場失諧的某一段區域產生振蕩，且振蕩的振幅、頻率失諧范圍的大小與dopper展寬的取值有關。
  14. The present invention teaches a data processing system capable of per forming a sampling frequency conversion

    本發明系提供一個資料處理系統，能夠執行一個取樣頻率轉換。
  15. Semiconductor devices - part 16 - 3 : microwave integrated circuits ; frequency converters iec 60747 - 16 - 3 : 2002 ; german version en 60747 - 16 - 3 : 2002

    半導體器件.第16 - 3部分:微波集成電路.頻率轉換器
  16. The railway power converter system will change the frequency of electricity produced by the e. on power plant to the lower frequency used by rail systems in central europe - from 50 hertz ( hz ) to 16. 7 hz

    該鐵路電力轉換系統將把e . on電廠產生的電力頻率轉換成在中歐鐵路系統所使用的更低頻率? ? 50赫茲到16 . 7赫茲。
  17. At last we introduce the realization of all the parts, the problem in the circuit design and the measured data. the results show that the designed system has met the requirement. in this dissertation, direct digital synthesis technology has been used in the phase - locked frequency synthesizer, which can make full use of the characteristics of direct digital synthesis technology such as flexible output wave shape and continuous

    本課題將直接數字式合成技術用於鎖相頻率合成器中，該方法將直接數字合成的特點，如輸出波形靈活且相位連續、頻率穩定度高、輸出頻率解析度高、頻率轉換速度快、輸出相位噪聲低、集成度高、功耗低、體積小等與鎖相環路的頻帶寬、工作頻率高、頻譜質量好等優點有機的結合起來，從而在寬帶的條件下實現了比較好的雜散性能和相噪。
  18. The circuit suit for long - distance transmission and monitoring and has high precision and anti - jamming characteristic. it measures the frequency by pci card which is base on the method of multi - period synchronization

    應用電容-頻率轉換的數字化測量方法具有較好的抗干擾效果和較高的測量解析度，適宜於遠距離傳輸和監測。
  19. At present, we have achieved frequency conversion in pulse - wave and continue - wave as well as quasi - continue - wave by using quasi - phase - matched method

    目前，利用準相位匹配技術已實現了脈沖、準連續和連續光的頻率轉換。
  20. Some hybrid frequency synthesis methods for dds + pll which used usually are presented in the following section, and its analysis for phase noise, spur, and frequency jump speed was also introduced

    接著對dds + pll頻率合成器常用組合方案進行了介紹，並對dds + pll系統的相位噪聲、雜散、頻率轉換速度進行了分析。
分享友人
分享到 Line

分享到臉書