正壓力波 的英文怎麼說
中文拼音 [zhēngyālìbō]
正壓力波
英文
positive pressure wave-
The experiment apparatus has been developed, which is based on software ( labview ) and hardware ( pci board ni 6024e ). the displacements and generative force at the tip of the ipmc actuators were measured with respect to the different voltages, frequents and various waveforms which include square, sinusoidal, and triangular wave
實驗選取了不同電壓幅值,不同頻率的方波、三角波、正弦波三種波形作為電激勵信號,利用高速攝像記錄ipmc的位移變形,並通過力傳感器實測了ipmc試樣末端的輸出力。It is necessary to control the mechanical stimuli precisely in the studies of cardiac mechano - electrical feedback ( mef ). in the present study a ventricular pressure - clamping system has been developed, which can be applied to isolated - perfused rabbit hearts. controlled by a computer, this system not only can make the left ventricle follow a command defining the same pressure wave as that during a beating cycle under physiological condition, but also deliver mechanical stimuli with a proper waveform to the ventricle at a particular time phase. this system integrates multiple functions, including perfusing, pacing, recording of electrocardiogram and monophasic action potentials, and clamping and measuring of ventricular pressures in isolated - perfused hearts. thus, it is a distinct system for investigating the phenomena and mechanisms of cardiac mef at organ level
在心臟機械電反饋的研究中準確控制機械刺激是非常重要的.本研究室構建了一套適用於離體家兔心臟的心室壓力鉗系統.該系統通過計算機控制壓力鉗,不僅能模擬正常生理條件下左心室的壓力波形,還能在心室活動周期的特定時相、以適當波形對心室施加機械刺激.該系統集心臟灌流與起搏、表面心電圖記錄、單相動作電位記錄、心室壓力鉗制與測定等多種功能於一體,特別適用於器官水平上觀察機械電反饋現象並探討其機制Abstract : it is necessary to control the mechanical stimuli precisely in the studies of cardiac mechano - electrical feedback ( mef ). in the present study a ventricular pressure - clamping system has been developed, which can be applied to isolated - perfused rabbit hearts. controlled by a computer, this system not only can make the left ventricle follow a command defining the same pressure wave as that during a beating cycle under physiological condition, but also deliver mechanical stimuli with a proper waveform to the ventricle at a particular time phase. this system integrates multiple functions, including perfusing, pacing, recording of electrocardiogram and monophasic action potentials, and clamping and measuring of ventricular pressures in isolated - perfused hearts. thus, it is a distinct system for investigating the phenomena and mechanisms of cardiac mef at organ level
文摘:在心臟機械電反饋的研究中準確控制機械刺激是非常重要的.本研究室構建了一套適用於離體家兔心臟的心室壓力鉗系統.該系統通過計算機控制壓力鉗,不僅能模擬正常生理條件下左心室的壓力波形,還能在心室活動周期的特定時相、以適當波形對心室施加機械刺激.該系統集心臟灌流與起搏、表面心電圖記錄、單相動作電位記錄、心室壓力鉗制與測定等多種功能於一體,特別適用於器官水平上觀察機械電反饋現象並探討其機制Objective : to investigate the effect of pumpless portosystemic bypass in clinical piggyback liver transplantation. methods : after catheterized inferior mesenteric vein, the silastic catheter ( filled with heparin saline ) was connected with the catheterized tube of internal jugular vein or subclavian vein in four piggyback liver transplantation patients. the channel was opened after the portal vein was occluded. the portal vein blood poured into the superior vena cava through the pumpless channel. the changes of mesenteric congestion, portal vein pressure, blood pressure and pulse were observed. results : during the occlusion of portal vein, the portal vein pressure was increased greatly, the intestine was congested and swelled obviously and the blood pressure and pulse fluctuated gently. after the pumpless bypass opened, intestinal congestion and swell were abated markedly, the portal pressure, blood pressure and pulse gradually returned to normal range. conclusions : pumpless portosystemic bypass shows a great effect on clinical piggyback liver transplantation. it is a feasible and economical method
目的探討背駝式原位肝移植術中採用體外門-體靜脈無泵轉流的臨床效果.方法4例行背駝式原位肝移植患者,腸系膜下靜脈屬支插管經體外硅膠管(充滿肝素鹽水)與頸內靜脈或鎖骨下靜脈插管相接,在阻斷門靜脈后開通腸系膜下靜脈插管,門靜脈血從體外無泵轉流管流入上腔靜脈,觀察轉流前後腸道瘀血、門靜脈壓、血壓、脈搏等變化情況.結果門靜脈阻斷后腸道明顯瘀血、腫脹,門靜脈壓力明顯升高,血壓、脈搏有不同程度的波動,無泵門靜脈轉流開放后,腸道瘀血、腫脹明顯好轉,門靜脈壓力逐漸恢復正常水平,血壓、脈搏恢復正常.結論背駝式原位肝移植術中體外門-體靜脈無泵流具有方便、經濟、實用等優點,具有良好的臨床效果On the part of the design of nine - component thrust vector stand, an automatic hydraulic pressure original position calibration system, a scheme of original position calibration, and the great rigidity universal flexible combinatorial underprop are designed. by using the scheme of “ universal flexible combinatorial underprop plus software digital filter ”, the inherent frequency of test stand is improved, and the problem of test stand libration is solved. then, the resolving method of the disturbance between underprops of the moveable frame is proposed, and the disturbance revise equation is deduced
在推力矢量試車臺設計方面,設計了自動液壓原位校準系統、原位校準方案以及大剛度萬向柔性組合支撐;採用「萬向柔性組合支撐+軟體數字濾波」的方案,提高了試車臺動架的固有頻率,解決了試車臺動架的振動問題;提出了動架約束互擾問題的解決方法,推導了互擾修正方程;研究了九分力推力矢量測量誤差分析方法,並計算了推力矢量測量精度。The paper discusses the transaction of the indicator diagram such as correcting top dot and pressure base line. an segment filtering program was designed to eliminate the effects of the pressure measuring passage by means of digital signal processing technique
文章論述了示功圖的處理,如上止點的校正,壓力基線的校正,並且應用數字信號處理技術,設計了分段濾波程序。The typical samples with different lithological characters are collected from two wells of representative reservoir consisting of sandstone and conglomerate of positive rhythm. compressional and shear wave velocities, porosity, and clay content are measured in two states fully saturated with water
在復雜的正旋迴砂礫巖儲層中,從兩口井系統地採集了不同巖性的典型樣品,在不同的有效壓力及兩種狀態氣飽和和水飽和下測試了巖石的縱橫波速度。The multi - level ( ml ) converter has the advantages such as low voltage stress for power devices, smaller output filters and reduced harmonic content of the output voltage, it is very suitable for high voltage and high power conversion applications
多電平變換器具有電壓應力低、輸出濾波器小及輸出電壓諧波含量小等優點,特別適合於高電壓大功率的應用場合,近年來正受到越來越多的關注。Through analyzing bed ' s response to wave, in the condition that super - stratum is more hard and second - stratum is more soft in region of interest, super static interstitial hydraulic pressure amplitude die away rapidly between stratums, before in sight of boundary between hard and soft stratum, plane effective pressure increase to max. shear stress reach peak value when bed thickness is approximately 2. 7 meters, then it will decrease to the minimum on the place where the flexible soil has a common boundary with the rigidity, so the boundary is the most destroy plane on engineering. on the basis of reconnaissance in situ, in normal situation of sea, the structure slides to the basin along the boundary
通過對底床在波浪下的響應分析,對于研究區底床上層較硬而第二層較軟的情況,超靜孔隙水壓力幅值在層間交界處迅速衰減,在臨近硬、軟地層交界處前,水平有效應力增至最大,剪切應力在底床厚度大約2 . 7米左右達到峰值,然後減小,到硬、軟層土交界位置,達到最小,因此這個界面就是最容易發生破壞的工程軟弱面,現場勘查證明,即使在正常海況下,構築物也會沿坡以此交界面為滑動面,緩慢向「盆」底滑動。Selective absorption of electromagnetic wave. adw employing gases which do n ' t absorb the laser energy can form a gas urtain " whose pressure of the two sides is equal to the low pressure of laser cavity and the ambient circumstance pressure respectively so it can isolate the higher pressure ambient air from entrancing into the laser cavity and maintain the hel ' s running normally
氣動窗口利用對激光器輸出波長沒有任何吸收作用的特殊氣體作為窗口工作介質,並根據氣體動力學部分相關原理,能生成一個具有與激光腔低壓和環境大氣高壓相匹配的壓力梯度、並把激光器低壓工作介質和外界大氣相隔離的「氣幕」 ,從而保證高能激光器的正常工作。The ascertainment of surges in surge tank and waterhammer pressure in pipe systems is the key point of the design of surge tanks and the safe function of the water power station
調壓室中的水位波動以及壓力管道水擊壓強的確定對調壓系統的正確設計和確保電站調壓系統的正常運行至關重要。Then numerical experiments on forcing dissipation and heating response of dipole ( unipole ) are carried out using global spectral model of quasi - geostrophic barotropic vorticity equation. for every experiment model integration is run for 90 days on the condition of three waves quasi - resonance. the results are given as follows : ( 1 ) under the effects of basic flow intensity and dipole ( unipole ) forcing source, there exist strong interaction among the three planetary waves, and there also exist quasi - two - week and intra - seasonal oscillation of the three planetary waves
然後,用數值試驗的方法,應用強迫耗散準地轉正壓渦度方程的全球譜模式,並在方程中考慮了偶(單)極子的熱力強迫作用,在三個行星波準共振的條件下,模式共積分90d ,得出: ( 1 )在基本氣流強度和偶(單)極強迫熱源的共同作用下,三個行星波之間存在很強的波?波相互作用,且波動振蕩呈現準雙周和季節內振蕩。Using teos and ti ( obu ) 4, etc. as modifying material, wood samples were nano modified by means of microwave technology, supersonic dispersing method and pressure penetrating method etc
摘要採用納米合成技術,以正矽酸乙酯、鈦酸丁酯等作為改性木材的前驅體,結合微波擴孔技術、超聲分散技術、壓力浸漬等方法,對木材進行了改性。Furthermore, analyzing the characteristics of the ultrasonic motor in the resonant state. on the basis of theoretical research, an experimentation is made, by which we analyse the disadvantages impacting the work of traveling wave and test the relationship among pressing force, speed and pull. the results of the experimentation validate the correctness and reliability of theoretical analysis
在理論分析的基礎上,對設計的超聲波馬達進行了實驗分析與測試,分析了影響馬達運轉的不利因素,測試了超聲波馬達不同預壓力下速度與力矩以及馬達空載時速度與頻率、速度與電壓之間的關系,驗證了理論分析結果的正確性和可靠性。The revision on the pressure broadening of miniature optically pumped submillimeter wave laser
小型光泵亞毫米波激光理論計算的壓力增寬修正Research indicates that this idea is also applicable for the carbonate. to set up a suit of idea of travel time reading of carbonate interval and use real pressure data to correct it during plotting the normal compaction trend curve are rather important. the method is applied to the prediction of formation pressure in luojiazhai and dukouhe oilfield successfully
研究認為,此種方法在碳酸鹽巖剖面同樣適用,關鍵是建立一套適合於碳酸鹽巖剖面選取視泥巖層段的聲波時差讀值方法和在構建正常壓實趨勢線時,根據趨勢線所計算的泥巖段聲波時差值和實測正常壓力資料修正該趨勢線。Positive pressure wave
正向壓力波Multilevel ( ml ) converters have been attracting more and more attention because they have the advantages such as low voltage stresses for power devices and reduced harmonic content of the voltage waveform. they are very suitable for high voltage and high power conversion applications
多電平直流變換器由於其開關管及二極體的電壓應力低、輸出電壓諧波含量小等優點,特別適合於高電壓大功率的應用場合,近年來正受到越來越多的關注。Firstly, the paper discusses well logging technology and the development of the domestic and foreign pressure meters, then proposes the sytem scheme design of sjdy - i electronic pressure meter and briefly analyzes its operating principle. secondly, the paper explains in detail the software and hardware design method, presents the design thought and flow charts of every function modules. thirdly, the paper analyzes the pc program, introduces software which adopts the filter and nonlinear regression methods for improve the system precision
本文首先在介紹了試井技術和目前國內外壓力計的發展狀況的基礎上,進行了sjdy -型存儲式深井電子壓力計系統總體方案設計,並對該系統的工作原理進行了簡要的分析;然後,闡述了sjdy -型存儲式深井電子壓力計井下儀器部分的軟硬體設計思想和設計目標,詳細介紹了整個系統的硬體組成部分,並給出了單片機系統(即井下儀器部分)軟體的設計思想和各個功能模塊的流程;接著,重點分析了sjdy -型存儲式深井電子壓力計的上位機程序以及各個模塊的具體功能,並設計了相應的軟體予以實現;最後採用濾波技術和非線性校正方法,來提高整個系統精度。Live - loading automatically compensates for the transient loads which cause bonnet movement by maintaining a positive load on the pressure seal gasket as the pressure reduces
動負載自動補償波動轉換中的變化,在壓力減少時,閥帽會產生運動,維持壓力密封墊圈上的正向負載。分享友人