通用頻率因子 的英文怎麼說

中文拼音 [tōngyòngbīnyīnzi]
通用頻率因子 英文
universal frequency factor
  • : 通量詞(用於動作)
  • : Ⅰ動詞1 (使用) use; employ; apply 2 (多用於否定: 需要) need 3 (敬辭: 吃; 喝) eat; drink Ⅱ名...
  • : 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...
  • : 率名詞(比值) rate; ratio; proportion
  • : Ⅰ動詞[書面語] (沿襲) follow; carry on Ⅱ介詞1 [書面語] (憑借; 根據) on the basis of; in accord...
  • : 子Ⅰ名詞1 (兒子) son 2 (人的通稱) person 3 (古代特指有學問的男人) ancient title of respect f...
  • 通用 : be in common use; be current; apply or be used universally
  • 頻率 : frequency; rate
  1. Heredity modes of 6 traits were studied by analysis of population genetics, by the method of family combination analysis, by the methods of proband ' s sib analysis, segregation analysis, the threshold model of polygenes, and analysis of typical family trees, according to the data of the 72 families. the relative importance between genetic and environmental effect on each character was evaluated by comparing the coherence of twins. gene frequencies of 5 genetic characters, calculated from han group in huhhot, were compared with other groups by u - test so as to study the population or nationality difference in heredity

    群體遺傳學分析、家系組合分析法、先證者同胞法、分離分析法及多基閾值模式分析方法對所得家系資料進行了統計學分析,結合家繫系譜分析探討了上述6項特徵的遺傳方式;過雙生一致的比較,對上述特徵的遺傳與環境效應的相對重要性進行了評價;計算了呼和浩特市漢族群體5對遺傳性狀的基,採u檢驗方法與相關文獻報道的其他群體進行了比較,探討了不同種族間或民族間的遺傳差異性。
  2. In the study of directional spectrum and reflection coefficient of multidirectional wave, firstly the wave elevation trains overlapped by the incident wave and the reflected wave of multidirectional wave are simulated in the method of a frequency corresponding to a direction. then the composed wave trains are analyzed respectively by the mbdm and the mmlm. during the numerical study, the input factors include the various wave parameters, the different measuring wave system and the various reflect characteristic

    在多向不規則波入射波方向譜和反射系數的分析研究中,利方向對應法模擬了多向不規則波入射波與反射波疊加的波面序列,將此合成波列分別應mbdm和mmlm進行分析,過輸入各種波浪參量、不同波浪測量系統和各種反射特性等,檢驗了mbdm和mmlm方法的適條件,對兩種分析方法的性能進行了比較分析。
  3. It can process dead - zone of two pulse signals accurately, whatever their types are, and has such characteristics as excellent performance, good flexibility and high reliability, and its switching frequency and dead - zone time are programmable

    它可以對兩路任意形式的脈沖信號進行精確的死區處理,且性能優異、靈活性和可靠性高。同時,它具有開關和死區時間可編程等特點,此,可在變器、 svg等其他電力電設備。
  4. In light of the limitation of fast fourier transform ( fft ) for the method of traditional spectrum analysis to analyze the unsteady signal, wavelet and wavelet analysis are made for the typical unsteady process signal of starting up and shut down with the good characteristic of simultaneous localization in both the time and the frequency domains based on the field test on the vibration of two - row placed units in lijiaxia hydropower station, in which the signal is decomposed into different frequency band, and then the weak signal is caught and the dominant frequency is picked up for the analysis of the vibration source

    摘要基於李家峽水電站雙排機組振動的現場試驗研究,並且針對傳統譜分析方法傅立葉變換( fft )對于非平穩信號已力不從心這一缺陷,利小波分析方法在時域和域上同時具有良好的局部化性質,過對開停機這一典型非平穩過程信號進行小波及小波包分析,將其分解到不同帶內,獲取微弱信息和提取優勢,並對其作振源分析,得出開停機初始時刻水流不穩均出現強烈的振動現象,且低段信號能量最大,開停機過程水流脈動壓力和尾水渦帶擺動是引起定基礎振動的主要原
  5. This text completely and systematically studies the status and the development of the pyrolysis and the fluidization of biomass, which distill the bio - oil in the domestic and international area, as well as the existing problems. this thesis primarily include following aspects : ( l ), by experimenting and measuring the energy ( heat value ) and the content of c, h, n chemical element of right 20 kinds of common biomass, on the base of the experimental result, and respectively established the biomass energy predict experiment formula with the element of h and c is from change, and passed the ro. os examination, which provides the basis and convenience for flash pyrolysis fluidization device energy to convert the rate to compute with biomass energy utilization calculation ; ( 2 ), proceeded the tg and dtg experimentation equal velocity ( 10 ? / min, 20 ? / min, 40 ? / min, 60 ? / min ) heating and constant temperature heating by studying on eight kinds of biomass samples, according to the experimental data and arrhenius formula, we established the dynamics model of pyrolysis of, then, using the goast - redfern and p function, we also solved the dynamics parameters and analyze out every kind of biomass ' s frequency factor and parameters of activation energy, and established the every kind of dynamics model of pyrolysis of biomass, all of these provide the theories and basis to make sure the reactor ' s flash pyrolysis work temperature scope design and the describing of pyrolysis reactor dynamics ; ( 3 ), in order to study and ascertain the process of heat completely getting to pyrolysis time of varied size biomass particles, we observed and measured the ratio of length and diameter ( l / d ) with the varied biomass through electron microscope, we concluded the l / d ratios usually is from 5. 0 to 6. 0, the average is 5. 3 ; ( 4 ), we studied the process of biomass transiting and the theory of complete pyrolysis time with the theory of complicated heat field, we got the time ( t ) of the varied size biomass particles arriving to complete pyrolysis, and we knew that the complete pyrolysis time and the time which get to the biggest production ratio are identical, all of these studies provide the theory base for design and forecasting the flash pyrolysis reactor solid state resort time ; ( 5 ), according to the above experiment result, synthesize to make use of the engineering the mechanics, engineering the material, machine the design to learn the principle, deduce, establish the theory of rotation cone flash pyrolysis reactor material resort time ( t ) and reasonable rotation velocity ( or frequency ) relation theory ; and ( 6 ), we gave the reactor ' s smallest cone angle certain, reactor cone wall strength design theory, the reactor production ability theory, the power design method and the critical rotation velocity theory

    本文較全面、系統地綜述了國內外生物質熱解液化制取生物燃油技術研究發展現狀及存在的問題,主要研究內容有: ( 1 )實驗、測定了20種常見生物質的能量(發熱量)和c 、 h 、 n元素含量,根據實驗結果分別建立了以h和c為自變量的生物質能量預測經驗公式,並過r _ ( 0 . 05 )檢驗;為閃速熱解液化裝置能量轉化計算和生物質能量利計算提供了依據和方便; ( 2 )選擇了8種生物質試樣作了等加熱速( 10 min 、 20 min 、 40 min 、 60 min )和恆溫加熱的tg和dtg實驗,根據實驗數據和阿倫尼烏斯公式建立了生物質熱解反應動力學微分方程,並採goast - redfem積分法和p函數對其動力學參數進行了求解,解析出各種生物質的和活化能參數,進而建立了各種生物質的熱解動力學模型,為科學確定反應器的閃速熱解工作溫度范圍及熱解反應動力學描述,提供了理論和依據; ( 3 )為研究和確定不同尺度的生物質顆粒中心達到全熱解的時間,在體視顯微鏡下對不同粒度的生物質顆粒的長徑比進行了實驗觀察和測定,得出生物質的長徑比( l d )一般在5 . 0 6 . 0之間,平均為5 . 3的結果; ( 4 )採復雜溫度場傳熱學理論對生物質傳熱過程及充分熱解時間理論進行了研究,解析推導出了不同尺寸生物質顆粒中心溫度達到充分熱解溫度的時間( t ) ,得出了理論推導的充分熱解時間與最大產油的熱解時間相一致的結果,為閃速熱解反應器固相滯留時間設計和預測提供了理論依據; ( 5 )根據上述實驗結果,綜合運工程力學、工程材料、機械設計學原理,推導、建立了轉錐式閃速熱解反應器物料滯留時間( )與轉速(或)合理匹配理論; ( 6 )提出了轉錐式閃速熱解反應器的最小錐角設計、錐壁強度設計、生產能力設計理論和功計算方法及臨界轉速理論等。
  6. Yet common definitions of race do sometimes work well to divide groups according to genetically determined propensities for certain diseases

    然而,行的人種定義有時確實管為某些疾病的致病的確與基有關,那些基在不同人種中出現的不同。
  7. Because gyrotron traveling wave tube amplifier ( gyro - twt ) is an important millimeter wave amplifier with the characteristics of the high output power, the broadband width, and good efficiency, which has vast application vistas in many areas such as millimeter radar, communications, electronic countermeasure, and so forth, it has been pay much respect in the world

    迴旋行波管是一種大功、高效、寬帶放大器,在毫米波雷達,信與電戰等方面有十分重要的應前景,而在國際上受到高度重視。由俄羅斯人g . denisov等提出的螺旋波紋波導是一種比較理想的結構。
  8. Thus, it is difficult to find the voltage reference for the harmonic analysis. since acem are always operated near to the synchronous speed, the frequency of the excited voltage is very low, even to zero. therefore, this is the power harmonic suppression study of a complicated power supply system, in which the about harmonic general theories and methods are all inapplicable

    現代交流勵磁電機( acem )採電力電變流器作為勵磁裝置,其勵磁電壓諧波含量豐富,難于獲得諧波分析所需的電壓基準,同時交流勵磁電機經常工作在同步轉速附近,致使勵磁電壓極低甚至為直流,常的諧波檢測方法和理論都無法適而這是一種目前尚未深入探討過的復雜供電系統電力諧波抑制問題的研究。
  9. The approach extends the parallel factor ( parafac ) analysis model from the common data - domain and subspace multiple invariance sensor array ( mi - sap ) formulations to the cumulant one, and forms three - way arrays by using the cumulant matrices got from array outputs, and analyzes the uniqueness of low - rank decomposition of the three - way arrays, then jointly estimates the ranges, frequencies and doas from the matrices via low - rank decomposition

    該演算法將常在數據和空間域應的平行分析模型擴展至高階累積量域,利陣元輸出計算的高階累積量矩陣構造三面陣,分析了該三面陣低秩分解的唯一性,並從分解得到的多個矩陣中聯合估計信源距離、及到達角。
  10. In such way, the frequency, the virtual value, the harmonic and power factor are acquired. it can achieve the intelligent control by way of cooperating with master station automatic apparatus system through adopting rs - 485 communication standard

    同時根據采樣值系統計算了、有效值、諧波、功數等電量,並過rs - 485信口與二級站微機相配合,達到智能控制的作
  11. Is toxic to tenebrio molitor l. the homological cry3aa gene was modified according to the characters of poplus genes and the other features of eukaryotic gene, and was artificially synthesized. the original and modified homological c / y3aa gene were cloned into binary vector pb121 and pbin438 respectively, and transplanted into 84k clone ( p. tomentos x p. glandulossa ) to breed new anti - insects tree species

    過對氨基酸密碼的偏好、使、多聚腺苷酸信號序列( ppss ) 、 mrna不穩定序列( dst )以及kozak等結構的優化改造,人工設計、合成了預期能在楊樹中高效表達的毒蛋白基modifiedcry3aa同源基; ( 4 )利強啟動表達載體pet30 - b完成了cry3aa同源基在大腸桿菌中的表達。
  12. The mode competition is much improved. it may operated with a large electron beam radius, that means decreasing the space charge effects compared with a smaller radius beam with the same current, hence the rbwo may operated with a low axial guide magnetic field. besides, the rbwo with a sinusoidal corrugated coaxial structure is very easy to manufacture

    波紋內導體rbwo具有一些突出優點:同軸結構中內導體的存在使系統的截止顯著升高,使得系統尺寸可比普波紋波導慢波系統大;具有很大的抑制模式競爭的能力和很高的功容量;可以採大半徑電注,在工作電流不變的情況下空間電荷效應大幅度降低,而可以工作在低磁場狀態;此種慢波結構內導體上的波紋易於加工。
  13. Along with increase of pressure, the parameters such as velocity, amplitude, main frequency and quality factor of seismic wave change big gradually, while change very weakly with the change of temperature. through testing research for artificial crack and pore model, we conclude that crack density, azimuth, opening and the change of pore have obvious influences on speed, amplitude, attenuation ( or quality factor ) and main frequency of seismic wave etc. but, seismic wave dynamic characteristics are more evident than its kinematical characteristics for the change of crack and pore parameters. therefore, it offers reliable experiment foundation for detecting crack and pore by seismic wave kinematical characteristics ( such as amplitude, attenuation and main frequency etc. )

    過對人工裂縫和孔洞模型的超聲波實驗研究,可以認為:裂縫密度、方位、張開度和孔洞密度的變化對縱橫波的速度、振幅、衰減(或品質q )和主等參數均有明顯的影響,但裂隙參數的變化對地震波動力學特徵參數(振幅、衰減、主等)的影響遠遠大於對運動學特徵參數(速度等)的影響,這為利地震波的振幅、衰減和主等屬性參數進行裂縫和孔洞特徵的檢測提供了可靠的實驗基礎。
  14. Based on these advantages we analyze the performance of constant - power variable - rate m - qam schemes for spectrally efficient data transmission over nmf channels. by introducing the adaptive modulation approach, we gain two things : 1 ) the error rate is kept at a constant level. 2 ) the achievable spectral efficiency comes within 5 db of the shannon capacity limit. at the last chapter, the presentation of a single base station and a single mobile scenario proved the feasibility of adaptive schemes

    然後作者的精力轉入道的自適應方案的研究中,首先過研究發現nakagami衰落的適當調整可以近似於常見的瑞利衰落和萊斯衰落,接著研究在無線道中採三種不同自適應方案時的道容量,研究表明速的調整是增加道容量的關鍵,在此基礎上,著重研究了離散變速qam的情況,表明這種調制方案無論在帶利還是在系統平均誤碼比其它情況提高很多。
  15. The thesis mainly deals with the third part of across : " sompi " cepstrum methods. the principle and system structure of across a re first introduced. the propagation of wave in media is simply studied and its transfer function in frequency domain is modeled as superimposed damped exponential sinusoids, each damped exponential sinusoid is called as a wave element and its exponential index part consists of two factors : group velocity travel time and decayed factor

    為此,首先介紹了across的原理與組成和過簡單地討論地震波在介質中的傳播情況建立起介質的傳遞函數模型,指出:在一個狹窄的窗口裡,介質的傳遞函數可以有限個阻尼正弦項的疊加的形式表示,每個阻尼正弦項代表一個波成分,其指數部分包括兩個:波成分在介質中的傳播時間和衰減
  16. The accurately controlled signal source generates sinusoidal elastic wave accurately controlled in frequency and stable in phase to " illustrate " underground media. time signal stacker receive signal by stacking and doing fft to measure the transfer function of media. " sompi " cepstrum method retrieve group velocity travel times and decayed factors of wave element from observational data of transfer function in a limited frequency window

    精密可控震源於產生精確相位穩定的正弦彈性波以照射地層內部,信號疊加器過對接收信號進行疊加和進行傅立葉變換的方式實現對介質傳遞函數的精密測量, 「存否」倒譜方法能夠根據一段窄帶域傳遞函數數據獲得時域上各個波成分的群速度傳播時間和介質衰減
  17. Secondly, the article begins with changing the original chip and selects a new type of chip, max1479, which has more emission power, constitutes a new communication protocol, and designs the circuit and program. in the end, this article analyses the influence of environment on the antenna. meanwhile, it also analyses characteristic of the antenna by using electromagnetic theory, and then designs a kind of inverted - f antenna

    其次,本文從射晶元改型入手,選一款專於汽車電並具有更高發射功的射晶元max1479 ,重新制定信方案,設計硬體電路並編程調試;最後,本文分析了環境素對天線輻射的影響,應天線和電磁場理論對天線的特性進行分析,設計一種倒f型天線和螺旋天線相結合的天線結構,並hfss軟體和cst軟體模擬。
  18. Harq, amc and multi - code in hsdpa have replaced the osvf and power control technology in release99 protocol. in a short time, the ues who are near to nodeb can be allowed to transfer more data with some higher modulation method. it increases the throughput of certain ues, as well as the throughput of a cell

    Hsdpa採harq 、 amc 、多碼傳輸等技術替代release99中物理道使的變擴( osvf )和功控制技術,使靠近nodeb的戶在短期內可以得到更多傳輸數據量和更高階的編碼調制組合,提高戶吞吐量,使系統從短期的變化中受益。
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