frequency constant 中文意思是什麼
frequency constant
解釋
頻率常數-
On the base of researching the theory of the scheme and analyzing the signal feature, it is obtained that the existence manners and character of distance information in the differential frequency signal. at the same time, a new conclusion is gained that the technology of frequency agility can decrease the constant error of system. it is also to say that frequency agility and frequency modulation fixed - distance fuze has the similar feature to random period frequency modulation fixed - distance fuze. according to the theory of address coding in the hopping - frequency communication, the paper presents the principle of selecting the frequency agility sequence which fit to the radio fuze and constructs the frequency agility sequence family based on the rs codes
在深入研究方案原理和分析信號特徵的基礎上，獲得了該體制引信差頻信號中，距離信息的存在形式和特點，得出了頻率捷變技術的引入降低了系統定距固定誤差這一新的結論，即頻率捷變調頻定距引信在定距性能上具有類似隨機周期調頻定距的特徵。本文引入跳頻通信地址編碼理論，結合無線電引信的具體特徵，提出了適用於無線電引信的頻率捷變序列的選擇原則，並構造了基於rs碼的寬間隔頻率捷變序列族。 -
Fourthly, according with the analyzing of flow measurement, we research the main problems needed to be solve in the process of measurement, such as analysis and measurement of the internal resistance, selection of excitation frequency, stable signal datum mark and restraining common mode interference, restraining for serial mode interference and working frequency interference ; transporting and shielding the flow signal, constant current excitation and magnetic field equalizing, flow measuring
第四，根據對流量測量問題分析的，深入研究了設計過程中需要解決的主要問題。如內阻分析與測量;勵磁頻率的選擇;穩定信號基準點與抑制共模干擾;串模干擾與工頻干擾抑制;流量信號傳輸與屏蔽;恆流勵磁與磁場補償;流量測量點的選擇等。 -
This paper supplied a new way through variable frequency variable speed ( vfvs ) to change its output flow rate and adding a constant - pressure - drop valve, which could solve the defects in hydraulic pressure servo control system, such as low efficiency in control system, short life, poor ability in resisting pollution, low efficiency in driving system and flow rate, pressure pulse. and this way was proved to be effective
本論文針對傳統伺服控制系統效率不高、元件壽命短、抗污染能力差、驅動系統效率低、存在流量及壓力脈動等缺陷，利用先進的交流變頻調速技術改變液壓泵轉速的容積調速新方法，提出了在液壓系統中加一個定差減壓閥的新思路，較好地解決了液壓伺服系統存在的上述問題。 -
Presents the energy saving principle of a frequency - controlled pump and points out the applicability of the law of similitude for centrifugal pumps and the conception of constant efficiency curves
摘要闡述了循環水泵變頻調速的節能原理，提出離心水泵相似定律的適用性和等效率曲線概念。 -
Suppose the speakers both emit a pure sinusoidal sound wave of constant frequency.
假定兩個揚聲器都發射恆定頻率的純正弦聲波。 -
Constant ratio frequency changer
恆比變頻器 -
So it holds a ideal ability to anti - interference and has 2 scalar level resolution in location and measuring velocity than traditional radio induction technology. and the channel composed of the new radio induction system for communication is different from the parameter - constant channel and the traditional parameter - changing channel, its parameter is decided by the mutual induction between its antenna and induction - cable, by the location of its antenna, by the signal frequency passing through, its parameter has nothing to do with the time parameter. the channel composed of the new radio induction system is a new parameter - changing channel independently of time for communication
而且，由新型無線感應系統組成的通道既不是恆參通道，也不是一般目前所知的變參通道，其通道傳遞函數的幅值只與信號的頻率有關，與系統中天線和感應電纜之間的互感和天線的位置有關，而與時間無關，其通道傳遞函數的相位只與天線的位置有關，而與時間無關，由新型無線感應系統組成的通道是一種不隨時間變化的新型變參通道。 -
The vibration is varied in frequency over a range on the order of 5 to 2, 000 cps, usually at a constant octave.
振動的頻率在5到2000赫的范圍內變化，通常用一常值的八階變化率。 -
Using the advanced technology by its head office ( newkey co., ltd. ), it produces various kinds of alumina black and white ceramic products. the component alumina ceramics, which are widely used in electron components, devices, electrical products, enjoy low loss of high frequency, high insulating strength, good specific volume resistance, small dielectric constant, high mechanical intensity and excellent airtightness and thermal and chemical stability
本公司根據目前市場需求，生產出各種型號的黑、白陶瓷產品，廣泛應用於電子、電工、化學工業、紡織工業、水暖、宇航、環保等諸多方面，系列產品有高頻損耗少，比體積電阻大，介電常數小，強度高，氣密性、熱穩定性、化學穩定性好等特點。 -
While two ( or more ) electromagnetic waves of the same frequency, same direction of vibration, same phase or constant phase difference superpose in space, the amplitude of composite wave is vector sum of the amplitude of each wave
由兩個（或兩個以上）頻率、振動方向相同、相位相同或相位差恆定的電磁波在空間疊加時，合成波振幅為各個波的振幅的矢量和。 -
In chapter 4, simulation models of constant frequency communication countermeasure federation and results of federation test and federation execution are presented
第四章給出了定頻通信對抗聯邦的模擬模型以及聯邦測試、聯邦執行結果。 -
This thesis includes researches on the design of communication countermeasure federation, implementations of constant frequency and fh ( frequency hopping ) communication countermeasure federations
本文的研究內容分為三個部分:通信對抗聯邦設計、定頻通信對抗聯邦實現以及跳頻通信對抗聯邦實現。 -
The constant frequency federation consists of five federates, which are communication transmitter, communication receiver, reconnaissance receiver, directionfinding receiver and jammer. all the federates adopt complex envelop simulation models
定頻通信對抗聯邦包含五個成員:通信發信機、通信接收機、偵察接收機、測向接收機和干擾機成員，各成員均採用復包絡模擬模型。 -
By use of electronic inverter, variable speed constant frequency ( vscf ) electrical generating system converts variable frequency ac power from generator to constant frequency ac power
變速恆頻電源系統是通過電子變換器將發電機輸出的變頻交流電轉換成為飛機用電設備所需的恆頻交流電。 -
Speed mode control of variable - speed constant - frequency wind energy generation system with double fed induction generator
變速恆頻雙饋風力發電系統的速度模式控制 -
Thus, objective of this project is to improve the functionality and efficiency, and mitigate the drawbacks of a variable speed generation system or asg ( adjustable speed generator ) in conjunction with a dfig ( double fed induction generator ), which is frequently named as variable - speed / constant frequency ( vscf ) generation system
本文的研究目的是改進雙饋電機變速發電系統或變速驅動系統的的功能和效率，減輕系統缺陷所帶來的危害。雙饋電機變速發電系統通常又稱為變速恆頻發電系統（ vscf - variablespeedconstantfrequency ） 。 -
The thesis is about the work around the centerpiece of varying speed constant frequency wind power generation unit
本文圍繞變速恆頻風力發電系統這個主題，進行了以下幾方面的研究工作。 -
Kv 0. 7 a high voltage variable frequency constant current capacitor charging power supply
高壓變頻恆流充電電源35 -
Application of variable frequency constant pressure water supply equipment in lage - scale pumping station
變頻恆壓供水設備在大型泵站的應用 -
The improvement of piezoelectric properties was obtained, and the frequency constant of the ceramics was changed obviously
並且該pmzn壓電陶瓷的壓電性有所提高，明顯改變了頻率常數。
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