pressure difference 中文意思是什麼

pressure difference 解釋
氣壓梯度
  • pressure : n 1 壓；按；擠；榨。2 【物理學】壓力，壓強；大氣壓力；電壓。3 精神壓力，政治[經濟、輿論等]壓力。4...
  • difference : n. 1. 差異，差別。2. 不和，爭論。3. 【數學】差，差額。4. 【邏輯學】特殊性。vt. 〈罕用語〉區別，使有差別。
  1. Heat sink for power semiconductor device part 2 : measuring method of thermal resistance and input fluid - output fluid pressure difference

    電力半導體器件用散熱器第2部分：熱阻和流阻測試方法
  2. The application of a pressure difference across an injector does not cause an immediate velocity response of the liquid propellant.

    經過噴注器的壓降發生變化時並不馬上引起液體推進劑速度變化。
  3. Simulation results show that better atomization can be realized by enhancing the cavitation intensity via increasing the injection pressure difference or decreasing the nozzle inlet round angle - radius ratio

    通過模擬計算可知，提高噴射壓差和減小噴孔入口圓角半徑都可以提高空穴強度，同時也發現提高噴孔長徑比可以使空穴在噴孔出口截面上分佈更為均勻。
  4. Flow of gas or liquid due to a pressure difference is called viscous flow.

    由於壓力差引起的氣體或液體流稱為滯流。
  5. This thesis introduces the working principle, craftwork requirement, modeling process, control strategies and the realization of lf refining furnance bottom blowing argon control system. through the study and analysis of bottom blowing argon process control system, the thesis discusses the mean neural network model of controlled object and the mathematical models of the exectors, pwm adjustable pressure controller and pcm adjustable flux controller according to the relevant liquid knowledge and relevant data, including design data, test data and running data. to begin with the craftwork reguirement of bottom blowing argon and the actual instance of the control system, it presents the strategies of fuzzy parameters self - adaptive pid control used in pressure difference inner loop and fuzzy plus pi compound control used in flux outer loop which are based on the above modeling in order to carry out the accurate control of argon flux

    本文介紹了lf精煉爐底吹氬過程式控制制系統的工作原理、工藝要求、建模過程、控制策略以及控制系統的實現。通過對精煉爐底吹氬過程式控制制系統進行研究與分析，並根據流體力學的有關知識以及有關數據（其中包括設計數據、試驗數據和運行數據） ，建立起了被控對象的平均神經網路模型和執行機構（即pwm調壓器和pcm調流器）的數學模型。在此模型的基礎上，從底吹氬工藝要求和控制系統的實際情況出發，提出了壓差內環模糊參數自適應pid控制策略和流量外環模糊pi復合控制策略，以實現氬氣流量的精確控制。
  6. Test methods for natural facing stones part 8 : test method for structural performance of dimension stone cladding systems by uniform static pressure difference

    天然飾面石材試驗方法第8部分:用均勻靜態壓差檢測石材掛裝系統結構強度試驗方法
  7. By linear regression analyzing of the concentration of plankton microbe and settling microbe, we get the relationship between plankton microbe, settling microbe and air exchange rate, which reflect the randomness of bacterium in dynamic state. controlling the pressure difference effectively by adjusting forced draught blower and exhaust blower. comparing the jet fluid of different supply - air outlet, the diffuse pore plate is suit to assembling cleanroom

    通過對測得不同換氣次數下裝配式潔凈室室內的浮遊菌濃度和沉降菌濃度的一元線性回歸分析得出浮遊菌濃度和換氣次數的關系、沉降菌濃度和換氣次數的關系以及浮遊菌和沉降菌之間的關系，反映了動態情況下，細菌運動的隨機性。
  8. The paper analyzes the non - lineal relations of the quantity of heat exchange and water flux of coil exchanger in part - load operating condition, the shortage of deciding the water flux in bypass pipe, the disadvantage that the operating condition of pumps and chiller ca n ' t be met with the load change of the air conditioning system in different operating condition of using pressure - difference bypassing control in primary water pump system. using load control method in the change of the operating condition of primary water pump system can realize that the load change is small and reasonable in the on / off condition of pumps and m m chiller by comparing load control method in primary variable - flow water pump system with pressure - difference bypassing control method, back water temperature control method

    本論文從目前空調工程中使用的變流量水系統入手，研究了盤管換熱器在部分負荷下水流量與換熱量的非線性關系，分析了文獻中介紹的旁通管通流能力選擇的不足之處和一次泵水系統採用壓差旁通控制時，工況轉換不能滿足系統控制要求的缺陷；比較了一次泵變流量水系統中壓差旁通控製法、回水溫度控製法、負荷控製法的精確性，並得出了在一次泵水系統的工況轉換時，採用負荷控製法能使冷水機組及其相應水泵在啟停時的負荷變化范圍較小，更符合建築物的冷量需求，節能效果較好的結論。
  9. Standard test method for structural performance of sheet metal roof and siding systems by uniform static air pressure difference

    用均勻靜態空氣壓差法測定薄金屬板屋頂和板壁系統結構性能的標準試驗方法
  10. At the same time, we resolved the problems on high pressure difference of pumps, and high earthquake, and eliminated the safe hidden trouble of equipment

    同時可以解決泵管壓差大、震動大的問題，消除裝置的安全隱患。
  11. Explores the location of pressure difference control points in variable flow rate systems with a hot water heating piping model

    摘要結合一個熱水供暖熱網模型，探討了變流量壓差控制點的設置位置。
  12. The tension force, shear forces ( including pushing force, cutting force and friction force ), impulse force, hydrodynamic drag on the suction pipes, and the force resulted from the pressure difference, etc, are the main forces for detail discussion in this paper

    詳細討論了主要作用力：在波浪補償器作用下的纜繩拉力、耙頭與海床間的土壤剪切力、作用在耙吸管上的水流阻力及由於壓力差在耙頭處產生的推動力等。
  13. It has a long history using a throttle device to measure the flow volume of fluid in pipe the method has formed normalization at home and abroad the principle is to make the flow bunch form the particial shrink at the place where the throttle part is located so as to produce a static pressure difference then measure and calculate the flow volume at the moment when the fluid is flowing through the throttle device by the static pressure measured this method is based on the law of conservation of energy and the equation of flow continuity

    用節流裝置測量管道中流體流量已歷史悠久，在國內、國際上都已標準化，其原理是使流束在節流件處形成局部收縮，產生靜壓力差，通過測量靜壓力差來衡量流體流過節流裝置時的流量大小，這種測量方法是以能量守恆定律和流動連續性方程為基礎的。
  14. Static pressure is the designed pressure difference within the pipeline between two testing points. it is a necessary date when selecting different types of pressure gauges

    靜壓是差壓表兩個檢測點所在管道內的設計壓力。它是差壓壓力表選型時必需的數據。
  15. Differential pressure gauges is used to test the pressure difference between two points, it is a mechanical pressure gauge that can directly indicate the pressure difference on the instrument meter

    靜壓是差壓表兩個檢測點所在管道內的設計壓力。它是差壓壓力表選型時必需的數據。
  16. A deformational particle with oil - soluable property is used as a bridge plug to build a shielding layer in the oil - gas reservior channel, to prevent the pollution caused by drilling mud entering the reservior due to the pressure difference, and so to protect the oil - gas reservior

    摘要用一種具有油溶性質的可變形粒子做橋塞物，在油氣儲層通道中建立橋堵屏蔽層，防止由於壓差造成鉆井泥漿進入儲層而形成污染，從而起到保護油氣儲層的作用。
  17. Concludes that the undesired effect of temperature difference could not be eliminated just by the negative pressure difference between adjacent rooms, that the contaminant air exchange would increase about 50 % in the temperature difference of 2 than that in the temperature difference of 0, and that such contamination could be reduced to about 1 / 31 ~ 1 / 16 with the help of buffer rooms

    結果顯示，溫差作用是一般壓差作用抵消不了的； 2溫差時污染物交換量比0溫差時增加50 %左右；緩沖室可對溫差作用引起的污染物交換起到15 ~ 30倍的動態隔離作用。
  18. The pressure difference determined electronically from the signals of the two sensors is used to control the switching point

    兩個壓力傳感器傳出的電子信號表示壓力的差別並控制開關點。
  19. Calculating and analysing result indicates that the control point located in the joint of first user and main pipe and the pressure difference equaled to the design value can satisfy the demand flow rate of the users and save energy

    計算分析結果表明，將控制點設置在第一個熱用戶與主幹管的連接處、控制壓差設為該處的設計工況壓差既能保證熱網中各用戶流量又較節能。
  20. As compared with the conventional straight well, the horizontal well can greatly increase the contact area between well and reservoir, change the filtrational mode in the vicinity of wellbore in the reservoir and reduce filtrational resistance, thus obtaining higher oil and gas production by a relatively low producing pressure difference

    摘要同常規的垂直井相對比，採用水平井開采能夠大幅度增加油氣井與油氣藏的接觸面積，改變油氣藏中井筒附近區域的滲流方式，降低滲流阻力，進而可以利用較低的生產壓差來實現更高的油氣產量。
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