無調變的 的英文怎麼說
中文拼音 [wúdiàobiànde]
無調變的
英文
unmodulated-
The second, at the high frequency primary coil, when switch turn on with control signal ( the spwm pulse is modulated ), in the positive or negative semi - period of low frequency modulation signal, transformer coil with same direction voltage. the magnetic flux of transformer core will increase step by step. at the end, it leads to magnetic flux saturation
二、在高頻變壓器原邊,當開關管接收控制信號脈沖列(經調制的spwm波列)導通時,在低頻調制信號的正半周或負半周內,施加在變壓器繞組上的是同一方向的電壓,變壓器磁芯中的磁通可能將級進地逐漸增加,導致磁芯飽和,造成磁偏或單向磁化,導致低頻電信號放大失真或由於很大的磁化電流而無法正常工作。Some people living near wind farms complain they are kept awake by a phenomenon known as aerodynamic modulation ( am ), low frequency noise made as the blades swoosh through the night air
有些住在風力發電廠附近的人抱怨,他們因為一種稱為空氣動力調變的現象,即輪葉的颼颼聲劃過夜空,產生低頻噪音,以致無法入眠。3. passive and active time - domain demodulation schemes were demonstrated based on a fiber bragg grating used as a tunable filter controlled by a piezoelectric stack, which was driven by an electrical sine wave signal. the measured strain applied on the sensor axially could be judged by observing the interval of the output between notches within a driving period in time - domain
利用匹配濾波技術,分別採用無源和有源方式,藉助受pzt驅動的解調光柵,將待測應變信息變為時序負脈沖間隔的變化,利用常規的示波器觀測同一掃描周期中兩負脈沖在時域中間隔的變化來確定待測應變的變化。Study of the ratio control characteristics of an electric car with a continuously variable transmission system
電動汽車無級變速傳動系統的速比調控特性研究The design of variable gear with extension speed range based on characteristic diagram of planetary differential
特性圖的擴大調速范圍型無級變速器的設計Aimed at design index of input power 1. 5kw, most output rotate velocity 300rpm, and rating output rotate velocity 150rpm, considering factors of angle and ratio of transmission, on the basis of kinematics simulation, author optimized the kinematics parameters. in this paper, author has made some analysis and study to the primal assembly condition of transformer ' s sequential action in theory, designed structure dimension of the input and output transformer, and verified the corresponding strengthen. further, the structure, which is to key transmission components of velocity control system of the speed regulator, has been designed based on meeting operational sensitivity, precision and self - locking
本文針對輸入功率為1 . 5kw ,最大輸出轉速,額定輸出轉速的無級變速器的設計要求,並考慮到傳動角及變速比等因素,在運動學模擬的基礎上,對運動學參數進行了優化;本文對變換器連續作用的初始裝配條件進行了理論分析與研究,對輸入、輸出變換器作了結構尺寸的設計,並進行了強度校核計算;本文還對變速器調速系統中主要傳動構件在滿足操作的靈敏度、精度、自鎖性的基礎上進行了結構設計;最後採用workingmodel3d軟體,進行虛擬樣機的計算機輔助模擬設計及運動學和動力學計算。Since the aegon vul was introduced to the market and became one of the most popular unit - linked investment - insurance products, the needs - based and consulting approach which distinguishes the aegon sales force from the others has enabled the company to exceed its objectives in adverse market conditions, living up to the reputation of the " champion force "
自從投資型保單明星商品-全球卓越變額萬能壽險上市后,向來以專業著稱,強調需求導向顧問式行銷方式的全球人壽業務菁英團隊,在逆勢環境中超額達成目標,成為壽險市場上攻無不克的一支精兵。New type of screw mechanism with new function of load sensitive variable speed
隨載荷變化而無級調速的新型螺旋機構These developments will yield a cognitive radio able to sense its rf environment and location and then alter its power, frequency, modulation and other operating parameters so as to dynamically reuse whatever spectrum is available
以這些發展製作出來的感知無線電裝置,能感應所在的rf環境與地點,進而調整功率、頻率、調變及其他運作參數,以便靈活運用所有可用的頻譜。By integrating gis, social and economic statistical and field investigating data, taking wudinghe river watershed as the case study area, we discussed the driving mechanisms for the watershed land use change and the relationship between land use spatial distribution pattern and soil erosion at different scales. the results as follows : 1
本文以無定河流域為典型研究地區,藉助地理信息系統( gis )技術,結合社會經濟統計資料和實地調查的數據,探討無定河流域土地利用變化的驅動機制和流域內不同尺度土地利用類型空間分佈格局與水土流失的關系,初步結論如下: 1Our object is an intermediate frequency modem of a software defined radio transmitter - receiver of multi - service, multi - modulationmode and multi - processdatarate. first, related software defined radio theory is introduced ; later, channels of transmitter - receiver are designed with consideration of data format, modulation, fec, interwaving. and scrambling ; emphasis is placed on theory and implementation of an audio compression algorithm cvsd ( continuous variable slope delta modulation ) and a fec technique convolutional coding - decoding
本文首先介紹了相關的軟體無線電理論;然後完成了包括數據格式,調制方式,糾錯碼方式,交織器和擾碼器等部分的中頻數據機通道設計;接著著重介紹了系統中使用的音頻壓縮演算法cvsd (連續可變斜率增量調制)的原理和實現,以及作為前向糾錯碼的卷積碼編碼理論和編解碼的高效實現。When both genes were co - expressed in e. coli, the activity of ppsa varied from 2. 1 - 9. 1 fold comparing to control, but the activity of tkta was relatively stable ( 3. 9 - 4. 5 fold ). whatever the two genes were expressed respectively or cooperatively, both could promote the production of dahp, the first intermediate of the common aromatic pathway, but co - expression was more effective on forming dahp and screened ppt - and ptp - as more effective. the results demonstrate that co - expression of ppsa and tkta can improve the production of dahp, and what ' s more, when multigenes co - expressed, the recombinant which has coordinated enzymes activity is optimum
莽草酸途徑的最優化和整體調控基因csra的敲除正是上述改變的分子基礎,同時也為三種芳香族氨基酸的基因工程菌的構建打下了基礎; 7 .在國內外首次實現了共同途徑限制性底物關鍵酶ppsa刁無『及arog與分支途徑關鍵酶基因phea的串聯高效表達,所構建的重組質粒ptga ,其ppsa 、 tkta 、 arog 、 cm和pd的酶活分別比對照提高了3 、 2 、 2 , 5 、 4 、 2 . 3倍,且其酶活比較協調一致; 8 .將ptga導入到篩選的基因敲除和基因替換菌株大腸桿菌31884 c甲b中,搖瓶發酵證實比以往所構建的基因工程菌株具有較高的phe產量和糖轉化率率,分別為0 . 448 %和22 . 4 % 。Szm8325a - szm9325 glass straight line edging machine is designed for grinding straight line flat edging of different sizes and thickness. szm9325a can process straight line and 45edge. coarse grinding, refine grinding, polishing, and angle - marking can be completed in a procession. tt s speed can be widely adjustedby its stelpless regulator. speed alteration is very mooth. in grinding operation, feeding and operation speed can be adjusted at random. front fails can be adjusted to fit caried thickness of processed glass. and its advanced structure, high precision, easy handling, and highefficiency, it is one of indispensable instruments for glass procession. szm9325p and szm9325ap adopt plc control system
Szm8325a - szm9325型玻璃直線磨邊機適用於磨削不同尺寸和厚度的平板玻璃直邊和45稜角, szm9325a可加直邊和45級邊。本產品集粗磨精磨拋光倒角等工序一次加工而成,並採用無級變速調節,可調范圍大,變速平穩在削磨過程中可任意調節進料速度和進給量可調節前導軌變換加工玻璃的厚度。Basing on the requirement of the project supported by chongqing science and technology committee, the study and development on original non - frictional and sequential operation ' s stepless speed regulator, the author has made some analysis to the physical principle and speed adjustment principle. in addition, as the main part of stepless speed regulators, the transformer was more concerned in the study. after probing the creation of its structure principle, this paper reveals its structure and dynamics rule, and creates a dynamics model and synthesis model of transformer
根據重慶市科委技術攻關項目《新型非摩擦式連續作用機械無級變速器的研製與開發》的要求,對該無級變速器的工作原理、調速原理及工作性能進行分析,並著重對無級變速器的核心部件轉換器進行分析,對其結構原理創新進行深入的探討,揭示了其結構及運動學的實質;建立了轉換器的運動學模型和綜合模型;對以轉換器這類以連桿作為輸出構件的曲柄搖桿機構的運動規律及其影響因素,首次進行了較深入、系統的分析研究,得出了一系列以連桿作為輸出構件的曲柄搖桿機構的運動規律。The use of time delays on these vehicles helps to eliminate transmission and motor damage by providing even and controlled acceleration. the delay is adjustable between 0 to 5 seconds and can be wired independently of other delays or alternatively these delays can be wired in cascade so that it is necessary for the first delay to switch on before the following commences timing etc. suppression is included in the delay circuit to prevent damage by voltage transients
延遲開關可以調整延遲時間0 ~ 5秒,並可連接數個延遲開關來逐步控制連續動作之時間(復數連接時,第一個開關要啟動接下來的開關才會跟著動作)避免電動車起動初期之電力脈沖,達到平順的起步動作,可預防電壓無端變動造成之電路故障The consumption of electrical energy of electrically calcined furnace during calcining anthracite is studied by adjusting the length of the top electrode, the flue damper and changing the release direction of removed dust produced from charging system of electrically calcined furnace
摘要根據電?爐?燒無煙煤的工藝原理,通過調整上部電極長度、煙道閘板及改變電?無煙煤前上料系統通風除塵灰的排放方向等工藝控制方法,對電?無煙煤電耗進行研究。Electronic units are applied to this device and poleless power regulating method is employed to control heating units, therefore the water temperature near the gate is prevented from being affected by the temperature change of surroundings and ice - free temperature is maintained all the time
該裝置利用電力電子元件,採用無極調功的形式控制加熱元件,使閘門附近的水溫不受環境溫度變化的影響,始終保持在不凍的溫度。By simulating, this paper compared the effect of capacitor compensation to that of svc compensation, the results showed that capacitor compensation add the voltage flash, and svc was the optimal equipment to restrain the flash. furthermore, the smaller value of ks and tf, the better effect of svc
通過數值模擬曲線分析,對比了電容補償和靜止無功補償器( svc )補償的效果,得到的結論是電容補償有擴大閃變的影響,而靜止無功補償器( svc )是抑制閃變的最佳裝置,並且調差系數ks和時間常數t _ f越小, svc補償效果越好。For the algorithm of reactive power optimization, presented in this paper, in order to found the linear programming model equations, the objective function is minimum total power losses, the controlled variables include the compensating capacity of reactive power, generator bus voltages and transformer tap positions, the state variables include reactive power of the generators, and the voltage amplitudes in the ends of transformers
本文研究的電力系統無功優化演算法是以整個網路的損耗最小為目標函數,以無功補償設備出力、發電機端電壓和可調變壓器變比為控制變量,以發電機的無功出力和變壓器端電壓幅值為狀態變量建立了線性規劃模型方程。In the proposed flow control method for abr service in atm networks, by introduction of delay factors, the cell transmission rate for abr traffic with different rtd are adjusted differently when the surplus bandwidth varies, and the rate variation amplitude for the short rtd traffic will be enlargeed while one for the long rtd traffic will be lessened, compared with erica
改進的erica演算法加入時延因子,使在連接中具有不同時延的用戶在剩餘帶寬變化時,速率的調整具有不同反應,時延大的反應較遲鈍,時延小的反應較敏感。改進演算法使得小時延信源能更快的適應帶寬的變化,緩解了由於大時延信源速率調整的滯后而無法及時解除擁塞的現象。分享友人