流化起始速度 的英文怎麼說

中文拼音 [liúhuàshǐ]
流化起始速度 英文
incipient fluidization velocity
  • : Ⅰ動1 (液體移動; 流動) flow 2 (移動不定) drift; move; wander 3 (流傳; 傳播) spread 4 (向壞...
  • : 起Ⅰ動詞1 (站起; 坐起) rise; get up; stand up 2 (取出; 取走) draw out; remove; extract; pull 3...
  • : Ⅰ名詞1 (最初; 起頭) beginning; start 2 (姓氏) a surname Ⅱ動詞(開始) start; begin Ⅲ副詞[書面...
  • : Ⅰ形容詞(迅速; 快) fast; rapid; quick; speedy Ⅱ名詞1 (速度) speed; velocity 2 (姓氏) a surna...
  • : 度動詞[書面語] (推測; 估計) surmise; estimate
  • 起始 : origin; origination; parentage; germ; initiation
  • 速度 : 1. [物理學] velocity; speed; blast; bat 2. [音樂] tempo3. (快慢的程度) speed; rate; pace; tempo
  1. In this thesis hydraulic experimental studies and theoretical analyses on the vortex - flow drop shaft were conduced and the following results were accomplished : ( 1 ) in the model test some hydraulic characteristics including the shape of air core in the center of the drop shaft, the radial distribution of water flow velocity and the distribution of pressure on the wall of the drop shaft were measured under the condition of high water head above 250m and large discharge above 1400m3 / s. ( 2 ) a kind of computational method for the spiral water flow in the air core region of drop shaft was discussed and applied and the results agree the experimental data well. ( 3 ) the total ratio of energy dissipation in the drop shaft can reach 90 % and the energy dissipation in every region was discussed quantitatively

    本文通過試驗研究與理論分析對旋式豎井泄洪洞應用於高水頭、大泄量情況時存在的一些水力學問題進行了研究和探討,取得以下主要成果:一、結合小灣工程導洞改建,對高水頭( 252m ) 、大泄量( 1400m ~ 3 s )條件下旋式豎井中的水運動特徵進行了比較全面的測量,包括空腔形態、徑向分佈及井壁壓強等;二、提出了豎井空腔段螺旋水水力計算方法,其計算結果與實測值吻合良好;三、利用試驗與計算結果,對旋式豎井的消能機理進行了探討,對豎井各部分的消能能力有了總體認識;四、對豎井下部消力井的合理井深進行了優試驗研究,發現消力井合理深為0 . 9d左右;五、通過試驗研究,歸納出豎井水總摻氣量估算方法,為導洞排氣方案的設計提供了參考依據;六、在高水頭、大量條件下,豎井空腔段下部很高,盡管水螺旋運動引的離心力可以確保井壁壓強保持正壓,但空數依然較低,因此豎井的空空蝕終是工程界關注的重大問題。
  2. Many experiments on the effects with the change of several parameters, such as initial charging current, amplitude and frequency of positive pulses, variety of the amplitude of positive pulses among each charging stages, amplitude and duration of negative pulses, duration between positive and negative pulses, have been performed. the results of analysis and comparison of experimental data verify the validity and feasibility of the fast - charging method. on this basis, a new type of control strategy is advanced

    就充電過程中的充電電、正脈沖的幅值、正脈沖的頻率、各充電級之間正脈沖幅值的變、負脈沖的幅值、負脈沖的持續時間、正負脈沖之間的停歇時間等幾個參數進行了大量的實驗,對實驗數據進行分析和比較,驗證了快充電方法的有效性和可行性,在此基礎上提出了一種新型快充電控制策略。
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