漏失速度 的英文怎麼說
中文拼音 [lóushīsùdù]
漏失速度
英文
leak-off velocity-
Based on the ostwald - de waele equation, the leakage characteristics of power - law transmitted by helical gear pump are researched, and the leakage model of power - law in the clearence is founded, and - the velocity distributing and the leakage capacity are worked out by the boundary condition. the power loss of leakage is got through the clearence leakage capacity, and the friction power loss is attained by the velocity distributing. the mathematic calculation model
利用冪律流體本構方程，首次對聚合物流體在斜齒齒輪泵中的漏流特性進行了研究，建立冪律流體在間隙中的泄漏模型，利用邊界條件求出速度分佈及泄漏量；由間隙泄漏量得到漏流損失功率，由速度分佈得到流體摩擦功率損失，並得到間隙最優解的數值計算數學模型，同時給出實例及數值計算結果。It can lead to not only quick wear and early failure of drill pipe but also the decrease of collapse resistance and burst resistance of casing string, which could cause casing collapse, casing deformation and casing leak, even well bore abandonment
其直接後果是：鉆柱快速磨損，導致過早失效；套管磨損會降低套管柱的抗擠強度和抗內壓強度，造成套管柱擠毀、變形及泄漏，嚴重時造成全井報廢。If dispatchers make misjudgment or leaky judgment for this kind of faults, maybe it will bring out serious aftereffects such as accident spread, etc. thus, it is necessary to develop a fault diagnosis method with strong robustness to suit all kinds of disadvantaged instances, and assist dispatchers to identify faults quickly for guarantying power system ' s safe and stable running
當電力系統發生復雜故障或開關?保護存在較多誤動?拒動以及因信息干擾發生信息丟失等諸多不確定因素時，會使得故障后的系統響應復雜化，給故障診斷工作造成很多困難，如果調度員對故障發生誤判，漏判，可能會導致事故擴大等嚴重後果。因此，有必要發展一種魯棒性強，適應各種不利情況的故障診斷方法，協助調度人員迅速識別故障，保證電力系統的安全穩定運行。In the third chapter, the mathematical models of project system have been established, and simulation has been done on the simulink enviroment of matlab software kits. the simulation focus on the effects of main parameters on the dynamic characteristics of speed control system, and the main parameters include viscosity damp coefficient and friction torque of electrical motor shaft, internal leakage coefficient of pump / motor of hydraulic circuits, gas volume of pressure accumulator, viscosity damp coefficient of cylinder piston and different running building floors, etc. at last, theoretical research effects of the flow and pressure pulsation of pump / motor on car speed and oil volume leakage theory are discussed. the fourth chapter of this thesis concerns the research on the key items about hydraulic power control system according to the ens 1 - 2 and other hydraulic elevator standards
論文第三章針對組成系統的各個模塊進行了機理建模，並且通過matlab軟體中的simulink圖形化模擬環境進行了本課題系統的模擬研究，主要針對影響系統特性的主要參數變化，動態分析系統的輸出特性，在上下行工況中，分析了電機軸系粘性阻尼系數、軸系摩擦力矩、主迴路蓄能器迴路液壓泵馬達內泄漏系數、蓄能器氣體容積、液壓缸柱塞粘性阻尼摩擦系數以及不同運行樓層工況等參數對系統特性的影響；最後對軸向柱塞泵馬達的流量壓力脈動對電梯轎廂速度的影響和蓄能器內油液體積損失機理進行了理論研究。The thesis, in the probability analysis and computation, considers the failure history of space frames and trusses, adopts the bound criterion and algorithms on the base of system ' s critical strength, and introduces the soft self - adaptation control bound into the identification of dominant failure modes ; at the same time, with the incremental load method and differential equalized recursive method, computes the limit - state function of failure mode and probability index precisely under no leaking the dominant failure modes
文中在可靠性分析和計算部分，考慮空間剛桁架結構系統的失效演化歷程，採用基於系統臨界強度的約界準則和約界演算法，將柔性自適應控制邊界引入失效模式識別過程；同時，用荷載增量法和微分等價遞歸演算法相結合，確保在嚴格不遺漏主要失效模式的情況下，快速準確地求解失效模式的極限狀態方程和可靠度指標。The 5th chapter is most important part. in this chapter, the developing and building procedures of the air diffusion system of spilled gas chemicals based on gis is introduced in detail, including : the whole design of system, establishing mathematic models library, establishing and managing database, the developing tool, important programming techniques
基於gis的水運氣體化學品泄漏大氣擴散模擬系統的開發研究將有助於海事局及有關主管部門對泄漏的有毒氣體擴散情況做隨時監控，及時發出預警、迅速做出應急決策，最大限度的減少人命傷亡、財產損失和環境污染。分享友人