frequency-variant 中文意思是什麼
frequency-variant
解釋
頻敏的-
The variant alleles are very frequent in populations, with the hightest frequence, 0. 29, found in africas. the ggc 54gac allele is common in chinese with gene frequency above 0. 1. hence, mbl deficiency is the most frequent immunodeficiency, but its pathological mechanisms remain elusive and await further investigation
這些等位基因為常染色體共顯性遺傳，人群中其基因頻率高得令人驚奇，最高者竟達0 . 29 ，我國漢族ggc54gac頻率約0 . 1 。 -
Objective : to investigate the frequency and types of variant hepatic arteries from gastroduodenal artery and their clinical significance
摘要目的：分析和探討變異起源於胃十二指腸動脈的肝動脈及其臨床意義。 -
Then, we establish the finite element analysis models of the antenna in different structure layout, and obtain the corresponding frequencies and model shapes. finally, according to the importance of each object, we set up the model of multiple objects that aims to maximize the first natural frequency and minimize the mass. combining orthogonal experiment and variant weighting coefficient method, we formed an effective multiple objects optimized algorithm basing on the neural network and genetic algorithm
本文首先詳細的敘述了天線結構的各組成單元，闡明了天線反射拋物面的形成原理；然後在ansys軟體環境中建立了不同結構布局下天線的有限元分析模型，分析計算了各種情況下天線的的固有頻率與振型；最後依據天線各指標的重要性，建立了以一階固有頻率最大、質量最小為目標的天線結構多目標優化設計模型，並基於神經網路和遺傳演算法，結合正交實驗和變加權系數技術，形成了一種有效的多目標優化演算法，在matlab平臺下實現了天線的結構多目標優化設計計算程序，求得了天線的最佳結構參數。 -
Interference cancellation for frequency domain equalization systems in time - variant channels
未來無線通信中的單載波頻域均衡技術 -
Amplify any variant frequency cycle and route them to me
放大每一個不同的頻率周期並把它們發送給我 -
The simulation results based on siso and mimo systems show that the proposed scheme could effectively eliminate the time - variant fading characteristics of wireless channel and under an acceptable demand of ber, the frequency efficiency is enhanced greatly and besides, dynamic encoding is implemented with low complexity and high efficiency
通過在單天線和多天線系統中的模擬，表明該方案可以有效的克服無線通道的時變衰落特性，在滿足誤碼率性能要求的基礎上可以提高系統頻譜利用率，且實現復雜度低。 -
2. the time variant nonlinear model of the laser gyro inertial surveying and attitude reference system is changed and simplified to time invariant linear model of the error states using robust analysis method. these results make frequency analysis based on transfer function become possible which is important for dynamic system analysis
2 、採用魯棒分析方法，將激光陀螺慣性測量與姿態參考系統的時變非線性模型轉化為誤差狀態的近似線性定常模型，從而使基於傳遞函數的頻域分析成為可能，這對動態系統分析是至關重要的。 -
With the characteristics of large ambient noise, very narrow bandwidth, low carrier frequency, great propagation latency and time - space - frequency variant multipath effect ( mpe ), the stochastic ocean channel has demonstrated the greatest complexity and difficulty for underwater acoustic wireless communications. among them multipath effect ( mpe ) is the most difficult obstacle that results in signal fading and inter - symbol interference ( isi )
但是噪聲高、帶寬窄、載波頻率低、傳輸時延大、多途徑效應隨時間?空間?頻率變化等通道特性都會給有效、可靠的水聲通信帶來很大的麻煩，其中多途徑效應是最主要的困擾因素，它會導致信號幅度衰落和碼間干擾。 -
In asian, the low serum concentrations were primarily due to an extremely high allele frequency of the codon 54 ( b ) variant
亞洲人mbl血清濃度低下主要由54位密碼突變引起。 -
People widely pay attention to wind energy because it is a regenerated energy. the variant - speed const - frequency ( vscf ) wind generation is very important in modern wind power system
風能作為一種可再生能源越來越受到廣泛的重視，其中變速恆頻風力發電是現代風力發電中的一個發展重點。 -
Fh signals are time - variant and non - stationary signals, while time - frequency analysis is a powerful tool to analyze this kind of signals. so how to deal with fh signals using time - frequency analysis technique is a important aspect in the research fields of fh surveillance algorithms
由於跳頻信號的時變特性以及時頻分析技術在分析時變非平穩信號方面的強大功能，因此，如何應用時頻分析技術來處理跳頻通信信號，是目前跳頻信號偵收演算法研究領域的一大方向。 -
We evaluated the frequency and types of variant hepatic arteries from gastroduodenal artery
並分別統計其變異類型和發生率。 -
Decomposition of time - variant modal by time - frequency filter
基於時頻濾波的時變模態分解方法
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