超外差 的英文怎麼說

中文拼音 [chāowàichā]
超外差 英文
[電子學] superheterodyne; superhet; ultradyne超外差變頻器 superheterodyne converter; super converter; 超外差電路 superheterodyne circuit; tropadyne; 超外差接收法 superheterodyne reception; 超外差接收機 [電子學] superhet; superheterodyne receiver; ultradyne receiver; 超外差收音機 superheterodyne （radio set）; 超外差線圈 super coil
  • 超 : Ⅰ動詞1 （越過; 高出） exceed; surpass; overtake 2 （在某個范圍以外; 不受限制） transcend; go beyo...
  • 外 : Ⅰ名詞1 （外面） outside; external side 2 （外國） foreign country 3 （以外） besides; beyond; in ...
  • 差 : 差Ⅰ名詞1 （不相同; 不相合） difference; dissimilarity 2 （差錯） mistake 3 [數學] （差數） differ...
  1. Such extreme organs include kidneys from donors aged over 70, from those whose hearts had stopped beating and thus deprived the organ in question of oxygen ( as opposed to those who had suffered brain death in which their hearts kept beating ), organs in which more than 30 % of the filtering units were not working and those that had been out of body for more than 30 hours

    這些極差的器官包括來自於年齡在70歲以上的捐贈者，或來自於死於心臟停止跳動因此器官供氧不足的死者（與死於腦死亡但心臟保持跳動的死者情況相反）的腎臟，另外還包括30 %的過濾單元都不能工作和取出體外超過30小時的器官。
  2. By that time, u. s. deficits had glutted world financial markets enough that foreign governments found themselves accepting and holding more dollars than they wanted.

    那時候，由美國逆差引起的美元外流充斥世界金融市場，以致外國政府發覺自己接受和持有的美元超過了它們的需要。
  3. Mixers are the key components of many microwave and millimeter - wave systems. the super - heterodyne receiver is always applied in modern communication system, mixer becomes the key component as is at the first part of system. but it is more and more difficult to get the choiceness lo source of the same band with the system is working at high frequency especially in the millimeter - wave. sub - harmonic mixer is a good solution to this problem now. in this circuit we need just half 、 quarter 、 even 1 / 8 of the rf signal frequency. in this paper the design and fabricate of sub - harmonic hmic mixers ( 2, 4 ) at w - band are introduced

    混頻器是微波通信、射電天文學、雷達、等離子物理、遙控、遙感、電子對抗，以及許多微波測量系統中至關重要的部件。在現代通信系統中，毫米波頻段通常採用超外差接收機，混頻器作為第一級就成為關鍵部件。由於在毫米波頻段，同頻段高性能的本振源成本高，技術難度大，採用分諧波混頻技術是解決此問題的有效途徑，只需射頻頻率1 / 2 、 1 / 4甚至1 / 8的本振頻率即可實現混頻。
  4. Most laser ultrasonic nondestructive testing systems are based on the heterodyne principle, but the laser ultrasonic nondestructive testing system which is based on the homodyne principle

    而且目前所研製的激光超聲無損檢測系統基本上採用外差干涉的方式，而零差干涉方式國內尚未見到有相關報道，這屬于論文的主要創新點。
  5. Edwin armstrong develops a receiving circuit - the superheterodyne

    艾德溫?阿姆斯特朗開發接收機電路?超外差式收音機。
  6. The receiver used two stages of down conversion. the total gain of receiver is more than 43db

    接收支路採用超外差兩次下變頻的方式，實驗表明接收支路的總增益大於43db 。
  7. In receiver system development, there are some innovations in the design of high linearity and high dynamic range, also in the circuitry realization

    接收機採用兩次變頻超外差式結構設計，第一中頻為高中頻。接收機頻率合成器採用dds來實現1hz的頻率解析度。
  8. In the pre - procession of front radio frequency, the super - heterodyne technology which get proper a / d sampling rate through choosing a proper frequency and bandwidth is adopted

    射頻前端預處理採用成熟的超外差技術，選擇合適的中頻和帶寬，得到合適的a d采樣速率。
  9. The rf receiver consists of rf front end and baseband regulation module. the high - intermediate - frequency superheterodyne structure is adopted in the final scheme. the fine sensitivity of the receiver is achieved by two cascaded lna in the front of the system

    系統採用超外差式變頻結構設計，兩級低噪聲放大單元級聯保證了接收機靈敏度，兩級增益控制單元實現了所要求的接收機動態范圍，並且整機的線性度也得到了保證。
  10. In this paper, microwave t / r front - end for short distance wireless communication is realized in miniature based on low cost mcm - l technology. the main jobs are as follows : 1. the performances of i / q modulation and direct converter receiver are analyzed to set down the system scheme

    主要工作包括以下幾個方面: 1 .基於目前流行的數字中頻接收技術，分析了i / q調制和直接變頻接收機的性能，提出超外差變頻的總體系統方案。
  11. The high - intermediate - frequency superheterodyne structure with twice conversions is used. three cascaded agc units applies in the receiver system, one of them is used as the choice, for realizing a high dynamic range while the linearity of the system is well guaranteed

    系統採用了兩次變頻超外差式結構設計，第一中頻為高中頻。另外系統還包含了三級自動增益控制單元，其中一級agc作為選項，實現了較大的動態范圍，並且整機的線性度也得到了保證。
  12. This design keep the twice frequency transform and the superheterodyne structure in analog receiver, and use programmable direct digital synthesizer ( dos ) in rf section. use this method, we can not only inherit the advantage of high sensitivity and high selection in traditional design, but also improve the automation of the equipment

    該方案保留了原模擬接收機二次變頻的超外差結構，在射頻前端利用了可編程的數字頻率合成器（ dds ） ，這樣既繼承了原接收機的高靈敏度，高選擇性的優點，又提高了它的接收機自動化特性。
  13. In this paper, for 2 ~ 2000mhz broadband rf front - end, using subsection processing fixed intermediate frequency superheterodyne architecture, and combining with the actual component ’ s level, a broadband rf front - end system simulation platform is presented, which provided the universal, standardization, and modularization of transmitter and receiver

    本文針對頻率范圍2 2000mhz的寬帶射頻前端，採用分段處理的固定中頻超外差結構，並結合目前的器件水平，建立了一個通用化、標準化、模塊化的寬頻帶射頻前端發射機和接收機系統模擬平臺。
  14. And typical super heterodyne structure in rereiver part. this scheme benefited to reduce frequency error and phase error, and had the advantages of good dynamic range and selectivity, short exploitation cycle and small venture in the given performance demand, etc. this system implemented a six - layer hoard rf handset model together with baseband by using advanced eda tool veribest 2000

    系統設計應用hd155131的gsm900 dcs1800雙頻解決方案，發射機部分主要採用offsetpll方案，該方案有利於減小系統的頻率誤差和相位誤差；接收機部分採用典型的超外差式結構，它具有優良的動態范圍和選擇性，在給定的性能要求下具有開發周期短、風險小等特點。
  15. External appearance of our citrus is inferior, but inside quality is equal to that of foreign citrus. there is strong complementarity in variety structure between our country and foreign counties

    從質量上來分析，我國柑橘的外觀品質較差，內在品質和國外差別不大，存在部分農藥殘留超標和檢驗檢疫病蟲害現象。
  16. Research on cmos implementation of wlan transceiver rf front - end is done in this thesis. the transceiver uses the most used super - heterodyne architecture, its rf front - end consists of low noise amplifier, down - converter, up - converter, preamplifier, lo buffer and pll frequency synthesizer

    本論文研究無線局域網收發機射頻前端的cmos實現，該收發機採用超外差式的拓撲結構，其射頻前端主要由低噪聲放大器、下變頻器、上變頻器、末前級、本地振蕩信號緩沖器和鎖相環型頻率合成器等模塊組成。
  17. It also analyses and compares the characteristics of bulk acoustic wave and surface acoustic wave, such as directivities and shapes. and then optical detection methods of laser - induced ultrasonic, especially cfpi detection method, are introduced

    然後，介紹了激光超聲的光學檢測技術，並重點分析了外差干涉檢測技術和共焦fabry - perot干涉檢測技術的原理和特點。
  18. The theory of the optical heterodyne measurement system is expounded and the principle and merit of ultrasound pulse generated by a laser pulse are analyzed

    對光外差系統的測量原理進行了說明，分析了由激光脈沖激勵超聲的原理和優點。
  19. The testing principle of the system is explained and the two components of the system including the optical heterodyne measurement system and the system of ultrasound pulse generated by a laser pulse are introduced

    課題採用一種結構簡單、易調試的光外差超聲無損探傷系統，對其探傷機理進行了說明，介紹了組成系統的兩部分:光外差測量系統和激光脈沖激勵超聲部分。
  20. The signal - to - noise ratio of the nondestructive testing system employing optical heterodyne and ultrasonic techniques is analyzed and calculated from two aspects including phase matching of optical heterodyne measurement in nondestructive testing and the effects of beam incidence on the intensity of heterodyne signal and signal beam

    對光外差超聲無損探傷系統的信噪比從兩個方面入手進行了計算分析:第一，光外差測量在無損探傷中的相位匹配;第二，光束入射角對信號光光強和外差信號強度的影響。
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