頻率交叉 的英文怎麼說
中文拼音 [bīnlǜjiāochā]
頻率交叉
英文
frequency crossing-
Sax found average chiasma frequencies of 2. 3 to 2. 5 per bivalent in pines and larches.
Sax發現松樹和落葉松每條二價染色體的平均交叉頻率是2.32.5。Sax found average chiasma frequencies of 2. 3 to 2. 5 per bivalent in pines and larches
Sax發現松樹和落葉松每條二價染色體的平均交叉頻率是2 . 3 2 . 5 。The chiasmata can slip off the ends of the bivalents, and thus chiasma frequency may be reduced by terminalization
有時交叉可以從二價體末端處滑開，因此移端過程可以降低交叉頻率。Third, other nuclear quanlities ( such as fission caused by slow neutron, odd - even difference of frequency of bandcrossing etc ) were researched briefly, no other than pairing correlation, their results represented a series of odd - even differences
（ 3 ）對原子核的其它性質（如慢中子引起的裂變，帶交叉頻率的奇偶差等）的奇偶差也作了簡要的研究，正是由於對關聯的存在，其他性質也表現出一系列的奇偶差。Internal bio - field tumor thermotherapy system : internal bio - field thermotherapy, in abbrevitation, uses two high frequency sources with different frequencies and phases to cross act human body. it is kind of therapeutic method which could heat the whole or locals with physical energy, without damages of normal tissue, while directly inducing apoptpsis of tumoe cells
內生場熱療系統是採用兩組不同頻率相位的高頻源交叉作用於人體，利用物理能量加熱全身或局部，既不損傷正常組織，又使腫瘤細胞凋亡的一種治療方法。Based on the propagation law of the cross - spectral density function in the space - frequency domain, the properties of polychromatic vector gsm beams through a paraxial optical abcd system are studied. the analytical propagation expressions for the cross - spectral density matrix of vector gsm beams passing through a paraxial optical abcd system are derived, which permits us to study the propagation properties of vector gsm beams, including the propagation - induced polarization changes, effect of the spectrum bandwidth and irradiance distributions in a unique way. there are some applications of the theoretical results
基於空間一頻率域中交叉譜密度函數的傳輸理論，研究了多色矢量gsm光束通過abcd光學系統傳輸時偏振特性的變化規律，首次推出了矢量高斯一謝爾模刑fgsm ）光束通過近軸abcd光學系統交叉譜密度矩陣的傳輸公式，並對矢量gsm光束傳輸中偏振的變化、譜寬的影響和強度的分佈等進行了統一研究。To detect transient signals under complex background, a novel method of aliasing - free exponential bilinear time - frequency distribution is presented in this paper, which can avoid the frequency aliasing and information loss existing in the traditional bilinear distributions, reduce the cross - terms effectively and possess high time - frequency resolution
摘要針對復雜背景條件下瞬時信號的探測，提出一種新的無混疊雙線性時間頻率分佈方法，該方法能夠避免常用的雙線性時頻分佈中的頻率混疊與信息丟失，有效減小交叉項干擾，而且具有較高的時頻解析度。The method not only can coordinate evolutionary process inside each population by using an adaptive regulation of crossover and mutation operators, but also can advance the formation of - best design by using adaptive adjustment of the competition frequency between populations
該方法不僅運用交叉運算元和變異運算元的自適應調節技術協調種內進化過程，而且通過種間競爭頻率的自適應調節促進最優個體的生成。The results show that wavelength locates in gain zone of semiconductor optical amplifier, and have higher peak power and proper time delay between the two pulses for the second order super gauss control pulse in semiconductor optical amplifier. a high quality amplified signal pulse can be achieved. the chirp can be reduced notability by using cascading soa in cross gain modulation based on soa, and the distance and the peak power of conversion optical pulse can be increased notability, and we can let down the demand for wavelength based on xgm in soa and enhance the flexibility of wavelength conversion
我們應用二階超高斯光脈沖與高斯信號脈沖同時注入soa和應用soa與非線性光學環鏡（ nolm ）相結合的方案來對信號脈沖進行壓縮整形，模擬顯示，在調節系統合適參數的情況下，波長位於soa增益區的二階超高斯控制光脈沖在具有較高的峰值功率和適當時延下輸入soa時，最後可以得到放大的高質量超簡訊號光脈沖；在基於soa的交叉增益調制（ xgm ）全光波長轉換中，採用級聯的soa能有效地使反轉光脈沖的頻率啁啾得到有效降低，波長向下轉換的距離和反轉光的峰值能量都得到明顯提高，降低了利用交叉增益調制（ xgm ）波長轉換中對波長精度的要求，從而提高了波長轉換的靈和性。This paper analyses and discusses the cross polarization problem in frequency re - use communication system. a accurate calculating methed and improve way is gived. ii is useful for communication system engineers
摘要本文分析和討論通信系統引入頻率復用技術而帶來的交叉極化問題。給出定量計算方法及改善的途徑。對工程技術人員有很大的指導意義。Next, we optimize the structure of the traditional class e power amplifier, including differential and cross - coupled feedback structure. the results by simulating the power amplifier using tsmc technology at 1. 8ghz proves changes improved the performance efficiently, at last we finished the layout of this class e power amplifier
緊接著對傳統e類功率放大器進行了優化，提出了全差分和交叉耦合結構的e類功率放大器，採用tsmc0 . 35 msigebicmos工藝對電路進行模擬，在1 . 8ghz的中心頻率下，模擬結果表明優化后的結構能夠較大程度的提高e類功率放大器的性能。Meanwhile, the performance of joint estimation of time - delay and frequency using the reduced interference distribution ( rid ) is analyzed comprehensively
同時還利用減少交叉項分佈（ rid ）實現水下多目標信號的時延-頻率聯合估計。A cross - verification mechanism is worked out for detecting facial features on moving pictures by merging the technologies of both image analysis and motion analysis. it provides a solution to the problem of error - correction and feature estimation and makes it possible to detect facial features on video segment at a correction ration of 98 %, thus paves the way for the application of content - based retrieval and video encoding
2 、提出圖像分析和運動分析相結合的交叉驗證方法，實現了活動圖像人臉特徵檢測中的自動糾錯和特徵估計機制，從而使視頻中人臉特徵自動檢測的正確率達到98 %以上，為基於內容檢索和視頻編碼的應用開辟了道路。The basic concepts of second - order coherence theory in describing wavefields are introduced. these concepts are the cross - spectral density function and spectral degree of coherence in the space - frequency domain, and the mutual coherence function and the complex degree of coherence in the space - time domain
介紹了二階相關理論中描述光場相干性質的基本概念，包括空間-時間域中的互相關函數、復相干度和空間-頻率域中的交叉譜密度函數、光譜相干度。Abstract : sixteen genetic traits were investigated in han and dong nationalities of hunan province. the frequencies of all the sixteen genetic traits and the gene frequencies of fourteen genetic traits except hand - clasping and arm - folding were calculated. the differences between two nationalities and those between male and female were ana - lyzed. the relations among handedness, hand - clasping and arm - folding were also analyzed
摘要本文對湖南漢族、侗族的16對遺傳性狀進行了調查.計算出了每對性狀的出現率及除扣手和交叉臂外的14對遺傳性狀的基因頻率，分析了民族間和性別間的差異，同時還分析了慣用手、扣手、交叉臂之間的關系。分享友人