脈動極 的英文怎麼說
中文拼音 [màidòngjí]
脈動極
英文
pulsation pole-
Conclusion coronary arteriography and intervention treatment through radial artery are safe and feasible, therefore, should be spread by adopting vigorous measures
結論經橈動脈途徑行冠脈造影和介入治療安全可行，應積極推廣。This paper presents a method that chopping wave is done by switch devices which consist of three - level resistance regulating module and intelligence power module ipm, and which realizes constant - current discharge of storage battery. to achieve the intelligence control of the drive protection and the discharge process of ipm, the paper designs circuit formed by igbt threshold drive pulse pwm signals. ipm fault - blocking protection circuit and microcomputer 80c196. the devices can accurately control the 0 ~ 150a discharge current and the discharge time of the storage battery and calculate the releasing power
實現蓄電池恆流放電過程智能控制是蓄電池放電裝置發展的必然趨，本文提出了一種通過三極電阻調節模塊和由智能功率模塊ipm為開關器件進行斬波從而實現蓄電池恆流放電的方法。為達到對ipm的驅動保護和放電過程的智能控制，文中設計了igbt門極驅動脈沖pwm信號形成電路和ipm故障封鎖保護電路及由單片機80c196為核心的微機控制器。本裝置能夠對蓄電池進行0 150a放電電流及放電時間的精確控制及釋放容量的計算。Research on wind is the precondition of wind response, then the section plane of static wind, intensity of onflow, psd function and correlativity of dynamic wind are involved in
對風的研究是進行風振響應研究的前提，風的基本特徵包括平均風速剖面、湍流強度、脈動風功率譜密度函數、脈動風的空間相關性以及極端風速的概率統計特性。Its products comprise various types of electrostatic precipitator 、 long bag low pressure pulse 、 positive ( negative ) pressure reverse flow 、 rhombus bag filter ( explosion proofing and ordinary type ) 、 pulsant rotary reverse flow flat bag filter 、 gas - box pulse bag filter ; flue gas desulfurization 、 waste water treatment facility and different nonstandard equipment
主要產品有各種型號的靜電除塵器（管極式及極板式） 、長袋低壓脈沖袋式除塵器、正（負）壓反吹大布袋除塵器、菱形袋式除塵器（防爆型及普通型） 、脈動反吹扁袋回轉式除塵器、氣箱脈沖除塵器等收塵設備；煙氣脫硫設備、水處理設備及各種規格的非標設備。Apoe2 binds poorly to the ldlr, and homozygous inheritance of the apoe2 allele is strongly associated with type iii dyslipoproteinemia. apoe2 and apoe4 are associated with hypercholesterolemia and atherosclerosis ( as ). the apoe4 is also associated with higher incidence and earlier age of onset of late onset familial alzheimer ' s disease ( ad ), whereas apoe2 may have the opposite effect
Apoe _ 2與ldlr結合能力很差，與型高脂血癥關聯。 apoe _ 2和apoe _ 4與高膽固醇血癥、動脈粥樣硬化（ as ）等疾病有關， apoe _ 4還是老年癡呆（ ad ）的高發風險因子，而apoe _ 2則對預防老年癡呆病的發生具有積極作用。An extremely high blood cholesterol level can form deposits under the skin as well as in the artery walls.
極度多的血膽固醇除了在動脈壁沉積之外，也能沉積在皮膚下面。At the aspect of hardware design, it adopts pulse distributor and the technology of single polar voltage drive to accomplish the function of controlling and driving stepmotor ; it adopts the technology of pulse width modulation and cmos h - bridge drive to accomplish the function of controlling and driving dc servomotor ; it adopts d / a convertor to accomplish the function of controlling ac transducer ; it adopts the technology of digital phase detection to accomplish the function of detecting the feedback position signal of induction phase shifter ; it adopts dsp ’ s capture cell to accomplish the function of detecting the feedback position signal of photoelectric coder
硬體方面，採用脈沖分配器和單極性電壓驅動技術實現了步進電機的控制和驅動功能;採用脈寬調制技術和cmos互補h橋驅動技術實現了直流伺服電機的控制和驅動功能;採用d / a轉換器實現了交流變頻器的控制功能;採用數字化相位檢測技術實現了感應移相器位置反饋信號的檢測功能;採用dsp的捕獲單元實現了光電編碼器位置反饋信號的檢測功能。In order to eliminate the influences caused by temperature, electrode - polarization and autoeciousness - capacitance, the traditional instrument has added complicated circuits so that it cause such shortcomings as big error, time - retardation and a relatively small scope. through the problems caused by 2 - probe electrode and ac current source, a new measuring circuit based on the excitation of bi - directional voltage pulse and the sensor of 4 - probe electrode is proposed, using single - chip to achieve auto - temperature compensation
作者在參閱國內外大量相關參考文獻的基礎上，從電導測試技術的原理性研究出發，分析了採用交流激勵源、兩電導電極為傳感器的傳統電導測試系統所面臨的種種問題，提出並研製了一種基於雙極性脈沖電壓激勵、以四電導電極為探頭、運用單片機進行溫度自動補償的新型電導率測量系統。The feedback of the output voltage is the major control loop. to achieve better frequency response and disturbance rejection of the input voltage, a input voltage feed - forward system is introduced in control loop. the duty - cycle of pwm applied at the gate of power mosfet is modulated by both input and output voltage
該晶元採用的控制方式為電壓型pwm （脈沖寬度調制， pulsewidthmodulation ）控制方式，以輸出電壓反饋作為主要控制參量，同時為了提高晶元對輸入電壓擾動的響應速度，採用了輸入電壓前饋方法，將輸入電壓因素引入了反饋控制環中，通過對輸入輸出電壓的檢測，控制加在功率mos管柵極電壓上矩形脈沖的占空比，進而調節輸出電壓。Modified formula for sensorless dc motor speed estimation was proposed through the test for relationship between the current ripple frequency and the rotation speed in a 4 - pole dc motor
摘要根據4極直流電動機的轉速與脈動電流頻率關系的實驗結果，對現有的無傳感器直流電動機測速公式提出了修正意見。The components, working principle, advantages and defects of pwm power amplifier are introduced briefly in the dissertation. the working characteristics of h - bridge pwm power amplifier in double - polarity mode is analyzed qualitatively and qualitatively and the conclusion that fluctuant magnitude and continuousness of armature current are the essential parameters which can be used to evaluate pwm control modes
論文簡要介紹pwm功率放大器的組成、工作原理、特點及存在問題；對常見h型雙極性模式pwm功率放大器的工作特性作了定性和定量的分析，指出了電樞電流脈動量和電樞電流連續與否是衡量pwm控制方案優劣的兩個本質參數。The goal of this paper is, by serial / parallel combination technique of two - transistos forward converters ( ttfcs ), to keep the merits of the ttfc, and to overcome the shortages of it. the interleaving technique is adopted, while in combining ttfcs. the interleaving technique lowers the net ripple amplitude and raises the effective ripple frequency of the overall converter without increasing switching losses or device stresses
組合式雙管正激變換器由雙管正激變換器串並聯構成，應用交錯控制策略，在保留雙管正激變換器功率開關管電壓應力低和可靠性高的優點同時，克服了等效占空比小、副邊二極體電壓應力高、輸出電流脈動大等缺點。It can vary from a gentle warmth, a localised pressure, or bubbling ( like stomach wind ), a localised dizziness, a tingling, a gentle pulsing, to a heavier throbbing, or a combination of some or all of the above
感覺可以極不相同，從一種柔和的溫暖的感覺、一種局部的壓力感、或一種氣泡感（就像一股胃氣） ，一種局部的暈眩、一種麻刺感、一種柔和的脈動、到一種更深沉的搏動、或上述全部或部分感覺的組合。The fundamental theory and equations for the pressure fluctuation are described and the wall pressure fluctuation is measured. based on the experiment data, the characteristics of pressure fluctuations are analyzed in the three - phase flow of water, air and sand. the effects of air concentration and sediment content on the amplitude and frequency of pressure fluctuations are discussed
建立了多相流壓強脈動基本方程，闡述了水流脈動壓強基本理論，分析了壓強脈動機理；根據試驗數據，探討了水、氣、沙三相流體的壓強脈動特性，初步得到了高速含沙摻氣水流脈動壓強的幅值特性與頻域特性；提出了脈動壓強強度系數、脈動壓強極差系數與含沙量、摻氣濃度的關系。But it has the disadvantages of torque pulsation, it ca n ' t achieve accurate position and speed of higher performance
但是無刷直流電動機運行中存在轉矩脈動問題，對實現更精確的位置和更高性能的速度控制有極大影響。The analysis about the central gear ' s mentions impact on the flow pulsation of the five poles of the external meshing gear integral pump
中心輪齒數對五極外嚙合齒輪復合泵流量脈動的影響分析In order to improving starting operating performance of dsem, the reason of the position signal error was analyzed, and the principle of the position signal error and the influence to torque ripple has been expounded
為了改善雙凸極電機起動運行性能，本文分析了電機位置信號誤差產生的原因，並闡述了位置信號誤差的原理以及對轉矩脈動的影響。High efficiency, low noise, no pulsation, air conveyed carrying no fuel, marginal vibration
效率高、噪音低、無脈動、輸送氣體中不含油氣，振動極微。This paper calculated the maximum mean velocity of wind and correspondences fluctuating wind continuous chart in duration of 100 years using greatest table sequence record in 10 minutes every month ( 3 ~ 5years ) in the basis of service life of the designed bridge and more probability
本文從實際風速時程記錄開始，利用短期（ 3 5年）連續的10分鐘月最大時程記錄，在一定保證率下，按照小樣本推算極值的方法，推算100年一遇的平均風速以及在此基礎上的脈動風時程。It could be a battery source ; however, in most case, the input is a diode rectified ac line voltage with a large filter capacitance, to provide a low internal impedance and low - ripple dc voltage source
該直流電壓源可能是一個電池，然而在大多數的情形是一個經二極體整流的交流電壓再加上一個大的濾波電容，用以提供一個低內阻、低脈動的直流電壓。分享友人