water hysteresis 中文意思是什麼
water hysteresis
解釋
水滯后現象- water : n 1 水；雨水；露；〈常作 pl 〉 礦泉，溫泉；藥水。2 〈常 pl 〉水體；水域；水道；海；湖；河；海域；...
- hysteresis : n. 1. 【物理學】磁滯。2. 【物理學】滯后現象[作用]；遲滯性。3. 平衡阻礙。
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Due to the effect of uentrapment of water and air is considered during the generation of water - filled cells, the method presented here can simulate the objective existing hysteresis between drainage and imbibition process, which can " t be reflected by the previous numerical simulation methods
由於該法在生成裂隙充水域時考慮了水和氣的「圈閉」效應，故能模擬出裂隙排水與吸水過程間客觀存在的滯后現象，這是以往數值試驗法所不能的。 -
And the major results and some new viewpoints were presented as follow : 1 ) sediment content of cn tillage system in runoff process is substantially low compared to st under rainfall with high intensity, showing cn bear the efficient capacity of control soil loss. nevertheless, when soil is saturated, the runoff intensity of both tillage systems is near, implicating cn has the limited function of reducing runoff. 2 ) based on the case analysis of observed all rainfall - runoff generation processes, a ) the initiation time hysteresis of surface runoff generation is notable when rainfall fall upon the unsaturated purple soils, which is attributed to the property of rapid water sorption and much non - capillary porosity
經近幾年的觀測和理論分析，取得了以下結果和創新的認識： 1 ）在降雨強度較大的情況下，保護性耕作制? ?聚土免耕的產沙強度明顯較常規耕作制? ?順坡耕作的小，說明聚土免耕耕作制防治土壤流失是有效的；但當土壤達到飽和后，聚土免耕的徑流強度與常規耕作的差異較小，產沙強度也增大，因此，聚土免耕防治水土流失的能力是有限的。 -
The rule about water flow in the unsaturated soil and the soil - water characteristic curve are described in this thesis in the first time step during the numerical simulation, the permeability coefficient is calculated according to the initial water content of the unsaturated soil, because of as shown in the soil - water characteristic curve has the hysteresis phenomenon
闡述了非飽和土中水流動的基本規律和土水特徵曲線。由於土水特徵曲線具有滯后的特點，提出了根據初始含水量來確定數值模擬初始時步非飽和土的滲透系數。 -
For big hysteresis control, response time is long and overmodulation is big, but dynamic performance figure is not good when we only use pi controller 。 so, i try to design the whole control project which composed of the vapor wraps water level control system and combustion control system use the control equipment of double cross - parameter fuzzy - pi controller
單獨採用pi控制，對大滯后控制，響應時間及超調很大，但動態性能指標差。因此，嘗試採用雙交叉參數fuzzy - pi控制器。組成了汽包水位和燃燒雙交叉參數自調整fuzzy ? pi組合控制器的整體控制方案。
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