通用頻率 的英文怎麼說
中文拼音 [tōngyòngbīnlǜ]
通用頻率
英文
universal frequency-
And because the connectivity is wireless and channel frequencies are fixed, users can roam within the coverage area and still remain the connectivity
同時由於連接是無線的、通道頻率是固定的,所以用戶可以在覆蓋區域內漫遊,但仍保持著與局域網的連接。The equation including the nonlinear dispersion, i. e. the modified nonlinear schrodinger ( mnls ) equation, is a better model. in this thesis, we take mnls solitons as a model for femtosecond soltions. then based on the recently developed direct perturbation theory for perturbed mnls equation, we study the raman self - frequency shift of femtosecond solitons and its suppression by the means of frequency filters. for this purpose, first, we define the physical parameters of mnls solitons ; next, through the direct perturbation theory for perturbed mnls equation, under adiabatic approximation, we obtain the evolving parameters of mnls soliton on our questions and then choose the parameters of frequency filters based on it ; at last, we directly numerically simulated our questions by split - step fourier ( ssf ) method after improving the arithmetic of the differentiation of the nonlinear item for satisfying mnls equation
本論文以mnls孤子作為光纖飛秒孤子的模型,通過新近建立的mnls孤子直接微擾理論,研究光纖中由拉曼效應引起的飛秒孤子在傳輸中的自頻移,以及通過頻率濾波對自頻移的抑制。為此,首先給出描述mnls孤子的各物理量,然後用mnls孤子直接微擾理論,解析地得到這些問題絕熱近似下的孤子參數演化,並由此選擇頻率濾波的參數,最後用分步傅里葉方法,在對非線性項微商的演算法做出了適合於mnls孤子的改善後,對拉曼效應及頻率濾波進行了直接數值模擬,其中頻率濾波參數用微擾理論確定。However, the farther analysis in the paper indicates that the strategy of parameter configuration in current connection pool technique is static state with 1 - order enactment while initializes connection pool without self - optimized adjustment according as the variety of application demand, the operation results of high use frequency database are not cached and users visit the same database independently. the multi - propose connection strategy cannot control the database operation for the same transaction and cannot ensure the acid attribute, etc. in according with the defections mentioned above, the service technique of self - optimized connection pool is presented in this paper and the composing structure for self - optimized connection pool is designed, then, some strategy in dynamic parameters adjustment, transaction management and data cache for connection pool is improved
然而,通過本文的研究分析,現有數據庫連接池技術的參數配置策略是靜態的,連接池初始化時進行一次設定,不能根據應用需求的變化而動態調整;連接池的核心管理機制中,沒有對使用頻率較高的數據庫操作結果進行緩存,多個用戶依然各自獨立地完成相同的數據庫訪問;使用的連接復用策略無法控制屬于同一個事務的多個數據庫操作,不能保證事務的acid屬性等。Earth was to be a cosmic library, a place of incredible beauty that experimented with how information could be stored through frequencies and through the genetic process
地球成為宇宙圖書館,試驗如何通過頻率並且通過基因作用方法儲存信息的令人難以置信的美麗地方。The study aims at comparing the use of " lexical phrases " among learners of different proficiency levels in order to gain insight into the relationship between language proficiency, fluency, idiomaticity and the use of lexical phrases
摘要本文通過對高級、中級和初級英語學習者口語樣本中詞匯短語使用頻率和使用類別的分析,試圖說明不同水平語言學習者詞匯短語使用與其口語流利度、語言地道性及其語言水平之間的關系。Lt is well anown that the multi ? ath effeet results in signal fading and intersymbol interference ( isd, wnich causes great difficulhes in pewces of transndssion in underwater acoushc cotnmnication. in this papef we used frequency diversity method to overcome the problem of signal fading, and used the frequency - hopping method to ebonate the isi caused by multi - path
水聲通道多途特性引起的信號衰落和碼間干擾是影響水下通信質量的主要因素,採用頻率分集技術可以處理幅度衰落,而跳頻技術則可以簡單、有效地抗多途引起的碼間干擾。Abstract : applied the principle of electromagnetic interference prediction, interference multi - predictions are made to solve the frequency spectrum administration in accordance with collective using radio sets in integrated communication command system. this paper obtains the frequency interval between radio sets making sure the electromagnetic compatibility
文摘:應用電磁干擾預測的原理,針對一體化通信指揮系統中,多部電臺集中使用所帶來的頻率管理問題,進行了干擾多級預測,得出了保證電磁兼容性系統各電臺之間應滿足的頻率間隔,提出了通信網中通信頻率方案。A coherent electromagnetic pulse in the range between the far - infrared and microwave region is used as a detection source. the amplitude of the wave is recorded by electro - optical or photoconductive sampling. after fast fourier transform, the amplitude and phase of the wave is given, then the complex refractive index standing for the absorption and dispersion of the material in thz region is extracted
Thz ( 10 ~ ( 12 ) hz )時域光譜技術是20世紀90年代發展起來的一種新型的光譜測量技術,它使用頻率介於遠紅外和微波之間的相干電磁輻射脈沖作為探測源,利用電光取樣或光電導取樣的方法直接記錄thz輻射電場的振幅時間波形,通過傅立葉變換得到測量信號振幅和相位的光譜分佈,進而獲得材料在thz波段的復介電常數,即色散及吸收等信息。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
通過對氨基酸密碼子的偏好、使用頻率、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因modifiedcry3aa同源基因; ( 4 )利用強啟動子表達載體pet30 - b完成了cry3aa同源基因在大腸桿菌中的表達。The muf and the possible maximum skywave field strength are calculated and are compared with the corresponding groundwave. and the conclusion is that the main propagation mode 200 kilometers on the sea is groundwave and the disturbance of skywave could be omitted
得出天波傳播的最高可用頻率、可能的最強天波場強,並與相應的地波場強進行了比較,闡明了海上200公里距離上的短波通信中電波主要是以地波的形式傳播的,天波對地波通信的多徑干擾問題可以忽略的結論。Comparing with p - n junction, sbd is a majority carrier device. it has low break - over voltage, and can be used at high frequency
與p - n結相比,它是一種多子器件,具有正向導通電壓低,使用頻率高等特點。In the course of the design, critical technologies are applied, such as digital phase - locked loop, fast fourier transform algorithm, universal asynchronous receiver & transmitter, and so on. in the project, as a important component, the module of monitoring the buses " power quality takes a long time
在設計過程中,使用的關鍵技術有:使用cpld模擬多路sspc多種狀態;在對匯流條電能質量的監測過程中採用頻率跟蹤技術? ?全數字鎖相環;應用fpga技術使用fft運算進行諧波分析;通用異步收發器等技術。Establish a customer service center, introduce discount payment system for the automatic deduction of water utility rates from bank accounts and calculation system for daily rate use
建立消費者服務中心,引入優惠支付系統,通過銀行帳戶和每日使用頻率計算系統自動減少用水費用。No organizations or individuals may use the same frequency or the same acoustic signals as those specially used by the state for civil air defense communications or air defense warning
國家用於人民防空通信的專用頻率和防空警報音響信號,任何組織或者個人不得佔用、混同。Frequency sharing criteria between line - of - sight radio - relay systems and space radiocommunication systems
視距微波接力通信系統與空間無線電通信系統共用頻率的技術要求The significance of the study lies in that it provides information on the type and frequency of learning strategies used by chinese high school students and how strategies might impact their performance on nmet
通過對以上結果的分析,我們可以得出以下的結論,即學習策略的使用與否、策略的應用頻率對高考成績的高低有顯著的影響。" we tried to prepare the aircore meander type thin film inductors to increase the frequency that can be used. we prepared them with masks and by magnetron spllttering. wthollt the magnetic material we got large inductance by properly choosing the size parameter. the change of the size parameter does not influence the frequency that can be used, so we can improve the quality factor in the same time
為了得到在更高頻率下適用的薄膜電感,在本實驗中我們嘗試製作了柵極型空心薄膜電感。我們採用掩膜法,通過磁控濺射制各樣品,在不加磁性材料的情況下,適當選取線圈形狀參數來得到較大的電感,由於形狀參數的改變不影響樣品的適用頻率,因而也能達到增大品質因數( q值)的目的。Connectors for frequencies below 3 mhz for use with printed boards. part 7 : detail specification for connectors, 8 - way, including fixed and free connectors with common mating features, with assessed quality
印刷電路板用頻率低於3 mhz的連接器.第7部分:經質量評估的包括有通用匹配器件的固定和活動連接器的8路連接器詳細規范This frame can be the foundation of new development in these fields, realizing the reuse of the frame design in large granularity ; 3. by analyzing and stat icing the wis, explicitly narrate the three common components, which have been used most widely, most effectively, and most worthy in this system
該框架可以作為領域內新系統的開發基礎,在一定程度上實現大粒度的框架設計復用; 3通過對web系統的分析統計,對系統中使用范圍最廣、使用頻率最高,使用價值最大的三類公共構件進行了詳細的說明。Connectors for frequencies below 3 mhz for use with printed boards - detail specification for 8 - way, shielded free and fixed connectors with common mating features, with assessed quality
印製板用頻率低於3mhz的連接器.具有通用配合特性的8路無屏蔽的固定連接器的詳細規范分享友人