pump frequency 中文意思是什麼
pump frequency
解釋
泵激頻率-
The frequency conversion regulation of the condensate pump
凝結水泵變頻調節 -
Presents the energy saving principle of a frequency - controlled pump and points out the applicability of the law of similitude for centrifugal pumps and the conception of constant efficiency curves
摘要闡述了循環水泵變頻調速的節能原理，提出離心水泵相似定律的適用性和等效率曲線概念。 -
Changes of the longitudinal and transversal wave velocities in different directions and the rock velocity anisotropy as a function of confining pressure have been studied under laboratory ultrasonic frequency for shale and sandstone with marked foliation, which had been saturated by the fluids with different viscosity kerosene and vacuum pump oil and salinity distilled water, 50000
利用不同黏度煤油和真空泵油不同礦化度蒸餾水50mg l和150mg l的nacl溶液的流體對頁巖和具有明顯層理的砂巖進行飽和，在實驗室超聲頻率下研究樣品不同方向縱橫波速度以及各向異性參數 -
Application of frequency changer in boiler fan and pump and its energy - saving analysis
水泵上的應用及節能分析 -
The pll consists of a crystal oscillator, a ring voltage - control - oscillator, a frequency divider, a phase / frequency detector, a charge pump and a loop filter
設計的電路包括20mhz晶體振蕩器，鑒頻鑒相器，壓控振蕩器，固定分頻器，電荷泵和低通濾波器。 -
This text summarises several control forms of gushing out oil pump test platform simply, and mainly proposes analog and digital control schemes of close ring adjusting speed, at the same time, gives the principles and implementation methods used in parameters control and measuring, this text introduces the asynchronous electromotor " s control process, in which, fuzzy control arithmetic is used, and the control commands are passed on by means of communication between mcu and frequency converter. there are two parts in this system. one is superior computer that is ordinary pc, the other is hypogynous at89c52. the functions of superior pc are control and display information through screen, and the functions of ats9c52 includes control, collecting, display, treatment, uploading of all parameters
詳細介紹了應用模糊控制演算法，以變頻器通訊方式進行異步電機調速的控制過程。系統由上位機和下位機兩部分組成。上位機為普通pc機，主要實現系統控制、數據顯示等功能，另外還有數據庫瀏覽、數據列印等功能；下位機以at89c52為核心，負責所有參數的採集、處理、顯示、上傳、控制等。 -
The maximum 50500 photo counts per second with 76mhz pump pulse frequency is detected. the probability to be single - photon state of every count is better than 99 % 5
在抽運光脈沖重復頻率為76mhz的情況下，得到了每秒50500次的下轉換光子記數，其中單光子概率大幹99 。 -
Enter calcium, which, by inhibiting the actiity of the sodium pump, regulates signal firing, and may consere energy and keep the high - frequency cells from burning out
加入鈣離子，可以抑制鈉泵的活動，調節信號的產生，可以保存能量，保護高頻細胞。 -
The carrier wave is modulated directly by the baseband signal at several frequency point in l band and s band. firstly, this paper clarifies the theory of i / q modulation, elaborates evm and acpl, and analyzes the effect of amplitude and phase unbalance and dc offset on evm. secondly we review the basic principle of phase locked loop and it ’ s composing parts, including the basic conception and design method of pll frequency synthesizer, especially introduce the charge pump pll frequency synthesizer in detail
首先，在闡述i / q正交調制基本原理的基礎上，通過對誤差矢量和鄰近通道功率泄漏的詳細分析，定性、定量地討論了各種非理想電路因素（如相位不平衡、幅度不平衡、直流偏差等）對調制器性能的影響;其次，介紹了鎖相環的工作原理和基本組成部分，包括鎖相環的設計和環路濾波器的設計，特別詳述了電荷泵鎖相頻率源;第三，介紹了採用直接調制技術模擬衛星信號的射頻前端的設計;最後，對整個直接射頻調制系統進行測試，結果基本上達到了課題要求。 -
Takes several energy saving measures for air conditioning system, nick a large capacity centrifugal chillers working with variable frequency nil capacity chillers, variable frequency and variable flow control on secondary pump water systems, cooling tower for four - pipe water system in winter, fan - coil unit for commercial peripheral zones aid all - air systems for interior zones, variable frequency control on supply and exhaust air fain, enthalpy control on fresh air cooling in winter and intermediate season
採用了多項空調節能措施：大冷量離心冷水機組搭配變頻小冷量機組，二次泵變頻變流量空調水系統，四管制風機盤管冬季用冷卻塔換冷供冷設計，商業外區風機盤管、內區全空氣空調系統，送風機、排風機變頻控制，過渡季、冬季利用室外新風通風降溫的焓值控制設計。 -
Firstly, we analyze the character of nd : yag, bbo and lbo, for nd : yag crystal and select the nd : yag as the gain medium and lbo as doubling - frequency crystal. ln the theory, analyzing the parameter of the gain medium length, the ratio of the pump - and laser - beam waists. based on the above analysis, we design the resonance cavity
首先，我們對增益介質的性質和非線性晶體bbo和lbo的一些性質進行了比較，選取nd ： yag作為增益介質， lbo作為倍頻晶體。理論上分析了激光器設計中的一些參數值，如增益介質長度、模式交疊率、最佳倍頻條件，並根據理論分析結果設計了諧振腔。 -
From the performance analysis of the inverter heat pump air conditioner, heat pump type vrf ( variable refrigerant flowrate ) air conditioning system, two - stage compression inverter air source heat pump, and cooling / heating / how - water inverter air source heat pump, the expanded function and performance improvement of air source heat pump from the variable frequency technology are analyzed in this paper
摘要以變頻熱泵空調器、熱泵型vrf空調系統以及我們提出的雙級壓縮變頻空氣源熱泵系統、供冷/供熱/供生活熱水變頻空氣源熱泵系統為研究對象，分析變頻技術引入空氣源熱泵系統帶來的功能拓展和性能提升。 -
Thirdly, it simulated the pumping circuit & dividing circuit with the widely used software matlab / simulink. the displacement of the rod piston and the impact of hydraulic are analyzed in the different input flow ( frequency of pump ) and different reversing time. it found out the cause of hydraulic impact ( one - to - one incorrespondence between the response time of dividing circuit and the operation time of rod piston ), and gave some methods to weaken hydraulic impact. in the final part of the paper, the reliability of the theory analysis is further verified by the experiment of hydraulic system
首先在流變學原理的基礎上，深入分析混凝土在輸送管道內的流動狀態，得出混凝土泵的負載特性方程；然後根據功率鍵合圖的建模方法，建立泵送迴路和分配迴路的數學模型，並運用模擬軟體matlab simulink對泵送和分配迴路模型進行了模擬，分析了在不同的輸入流量（泵送頻率）和換向時間下，活塞桿的位移和系統的液壓沖擊情況，找到了引起液壓沖擊的根本原因（即分配迴路的響應時間（固定值）與活塞桿的運動時間（變化值）不相匹配） ，並提出了相應的改進方法。 -
To tune up the frequency of power supply by the transducer in the system, this adjusting make the speed of electromotor and performance curve of pump change. at last, it make the status of a pump alter
在變頻調速恆壓供水系統中，單臺水泵工況的調節是通過變頻器來改變電源的頻率f來改變電機的轉速n ，從而改變水泵性能曲線得以實現的。 -
Through analyzing the figure of energy wasting of pump, the quality in pipes is direct proportion of the speed of pump if the speed of pump is reduced. the power of electromotor fell the cube of the speed of pump. so the energy wasting of constant pressure water supply based on variable frequency speed regulating technology is envident less than the traditional mode is used throttle to supply water
分析水泵工況的能耗比較圖，可以看出利用變頻調速實現恆壓供水，當轉速降低時，流量與轉速成正比，功率以轉速的三次方下降，與傳統供水方式中用閥門節流方式相比，在一定程度上可以減少能量損耗，能夠明顯節能。 -
So the pipe system sends out noise because of resonance. especially the frequency 250hz of pulsating water is in close proximity to natural frequency of pipe, so the 250hz is a dangerous frequency to the pipe system. there is another reason why the noise is reached to 110db ( a ) in pump room that the noise is magnified by the cistern because of the resonance of cistern
特別是激勵頻率為250hz的頻率分量恰好與管道系統的固有頻率相接近，其引起的管道振動對噪聲的貢獻最突出，同時也與水泵房房腔的固有頻率相接近，從而引起房腔共鳴發聲，使噪聲進一步被放大，以至於噪聲最大處高達105db （ a ） 。 -
So qpm enlarge the application range of the crystal in existence. presently diode pumped all - solid - state lasers have been developing quickly, which provides an ideal pump source for qpm. so lower power all - solid - state laser frequency conversion by qpm has been becoming a research focus
近年來，隨著激光二極體（ ld ）技術的發展，小功率全固態激光器已經十分成熟，為準相位匹配提供了優質的泵源，因此，小功率全固態激光器的準相位匹配頻率變換成為目前的一個研究熱點。 -
4 ) the tuning characteristics of doubly - resonant optical parametric oscillator propo ) output by changing crystal ' s temperature, opo ' s cavity length and pump frequency respectively are theoretically analyzed and experimental obtained the wavelength of the opo output can be tuned from 2038nm to 2227nm by the crystal ' s temperature changed of 5. 3, from 2044nm to 2219nm by the cavity length changed of 514nm, and 375mhz by the pump frequency continuously tuned 750mhz
當晶體溫度變化5 . 3時，得到2038nm - 2227nm可調諧下轉換光輸出；當opo的腔長相對于簡並點腔長變化514nm時，得到2044nm - 2219nm可調諧下轉換光輸出：當泵浦光頻率連續的改變了750mhz時，下轉換光的頻率相應連續調諧375mhz 。理論擬合與實驗結果基本一致。 -
Xd - jb1. 2 style is non - automatic - controlled piston glue pump. frequency of pneumatic drive is controlled by solenoid valves. the attached heating device can adjust water temperature according to surrounding temperature
2型屬於它控式活塞膠水泵，它由電磁閥控制氣壓驅動的頻率。膠水泵附有的加熱裝置，可按環境溫度調節膠水溫度。 -
According to the theory of developing viscous crude with screw pump and combined with the reservoir characteristic and oil property, fault block 70 is developed reasonably and effectively through a series of corollary technique including chemical pre - processing in the formation, viscosity decrease in the well bore, down - hole anchoring of screw pump, optimized design of screw pump, reasonable determination of the turning rate of screw pump, frequency alternating control, heat exchange and viscosity decrease in well head, monitoring of screw pump
依據螺桿泵開采重油的理論，結合澤70斷塊稠油油藏的特點和原油物性，通過實施地層化學預處理、井筒降粘、螺桿泵井下錨定、螺桿泵優化設計、螺桿泵合理轉速的確定、變頻控制、井口換熱降粘、螺桿泵監測等一系列螺桿泵配套工藝技術，使澤70斷塊得以合理有效的開發。
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