預燃時間 的英文怎麼說

中文拼音 [yùránshíjiān]
預燃時間 英文
pre assembly method
  • 預 : Ⅰ副詞（預先; 事先） in advance; beforehand Ⅱ動詞（參與） take part in
  • 燃 : 動詞1. （燃燒） burn 2. （引火點著） ignite; light
  • 時 : shí］Ⅰ名1 （比較長的一段時間）time; times; days:當時at that time; in those days; 古時 ancient tim...
  • 間 : 間Ⅰ名詞1 （中間） between; among 2 （一定的空間或時間里） with a definite time or space 3 （一間...
  • 時間 : time; hour; 北京時間十九點整19 hours beijing time; 上課時間school hours; 時間與空間 time and spac...
  1. The investigation has declared that the fuel injection with bq fuel pump had higher injection pressure, bigger fuel supply rate and shouter fuel supply duration, which would cause the fuel injection quantity and the fule - air mixture to increase during ignition delay period, the pre - mixed combustion to become acutely, and finally result in increased power levels of noise

    研究表明，裝配bq噴油泵，噴油系統的噴油壓力較高，供油速率較大和供油持續時間縮短，使得滯燃期的噴油量增加，滯燃期內形成的可燃混合較多，預混燃燒劇烈，導致整機噪聲聲功率級增加。
  2. There are many methods to gas load forecasting, including : regression analytical method, time serial method, elasticity coefficient forecasting, index analytical method, grey method, fuzzy logic forecasting, artificial neural network forecasting model, experts system forecasting model, optimizing combination forecasting model, etc.

    用於燃氣負荷預測的方法很多，包括:回歸分析法、時間序列法、彈性系數預測法、指針分析法、灰色預測法、模糊邏輯預測法、人工神經網路預測法、專家系統預測法、優化組合預測法等。
  3. This text completely and systematically studies the status and the development of the pyrolysis and the fluidization of biomass, which distill the bio - oil in the domestic and international area, as well as the existing problems. this thesis primarily include following aspects : ( l ), by experimenting and measuring the energy ( heat value ) and the content of c, h, n chemical element of right 20 kinds of common biomass, on the base of the experimental result, and respectively established the biomass energy predict experiment formula with the element of h and c is from change, and passed the ro. os examination, which provides the basis and convenience for flash pyrolysis fluidization device energy to convert the rate to compute with biomass energy utilization calculation ; ( 2 ), proceeded the tg and dtg experimentation equal velocity ( 10 ? / min, 20 ? / min, 40 ? / min, 60 ? / min ) heating and constant temperature heating by studying on eight kinds of biomass samples, according to the experimental data and arrhenius formula, we established the dynamics model of pyrolysis of, then, using the goast - redfern and p function, we also solved the dynamics parameters and analyze out every kind of biomass ' s frequency factor and parameters of activation energy, and established the every kind of dynamics model of pyrolysis of biomass, all of these provide the theories and basis to make sure the reactor ' s flash pyrolysis work temperature scope design and the describing of pyrolysis reactor dynamics ; ( 3 ), in order to study and ascertain the process of heat completely getting to pyrolysis time of varied size biomass particles, we observed and measured the ratio of length and diameter ( l / d ) with the varied biomass through electron microscope, we concluded the l / d ratios usually is from 5. 0 to 6. 0, the average is 5. 3 ; ( 4 ), we studied the process of biomass transiting and the theory of complete pyrolysis time with the theory of complicated heat field, we got the time ( t ) of the varied size biomass particles arriving to complete pyrolysis, and we knew that the complete pyrolysis time and the time which get to the biggest production ratio are identical, all of these studies provide the theory base for design and forecasting the flash pyrolysis reactor solid state resort time ; ( 5 ), according to the above experiment result, synthesize to make use of the engineering the mechanics, engineering the material, machine the design to learn the principle, deduce, establish the theory of rotation cone flash pyrolysis reactor material resort time ( t ) and reasonable rotation velocity ( or frequency ) relation theory ; and ( 6 ), we gave the reactor ' s smallest cone angle certain, reactor cone wall strength design theory, the reactor production ability theory, the power design method and the critical rotation velocity theory

    本文較全面、系統地綜述了國內外生物質熱解液化制取生物燃油技術研究發展現狀及存在的問題，主要研究內容有： （ 1 ）實驗、測定了20種常見生物質的能量（發熱量）和c 、 h 、 n元素含量，根據實驗結果分別建立了以h和c為自變量的生物質能量預測經驗公式，並通過r _ （ 0 . 05 ）檢驗；為閃速熱解液化裝置能量轉化率計算和生物質能量利用率計算提供了依據和方便； （ 2 ）選擇了8種生物質試樣作了等加熱速率（ 10 min 、 20 min 、 40 min 、 60 min ）和恆溫加熱的tg和dtg實驗，根據實驗數據和阿倫尼烏斯公式建立了生物質熱解反應動力學微分方程，並採用goast - redfem積分法和p函數對其動力學參數進行了求解，解析出各種生物質的頻率因子和活化能參數，進而建立了各種生物質的熱解動力學模型，為科學確定反應器的閃速熱解工作溫度范圍及熱解反應動力學描述，提供了理論和依據； （ 3 ）為研究和確定不同尺度的生物質顆粒中心達到全熱解的時間，在體視顯微鏡下對不同粒度的生物質顆粒的長徑比進行了實驗觀察和測定，得出生物質的長徑比（ l d ）一般在5 . 0 6 . 0之間，平均為5 . 3的結果； （ 4 ）採用復雜溫度場傳熱學理論對生物質傳熱過程及充分熱解時間理論進行了研究，解析推導出了不同尺寸生物質顆粒中心溫度達到充分熱解溫度的時間（ t ） ，得出了理論推導的充分熱解時間與最大產油率的熱解時間相一致的結果，為閃速熱解反應器固相滯留時間設計和預測提供了理論依據； （ 5 ）根據上述實驗結果，綜合運用工程力學、工程材料、機械設計學原理，推導、建立了轉錐式閃速熱解反應器物料滯留時間（ ）與轉速（或頻率）合理匹配理論； （ 6 ）提出了轉錐式閃速熱解反應器的最小錐角設計、錐壁強度設計、生產能力設計理論和功率計算方法及臨界轉速理論等。
  4. “ in another type of prediction, an immediate alert, seismic waves above a certain threshold send an electronic alert, which, with a lead time of several seconds, can be used for such things as shutting down nuclear reactors, gas and electricity grids, and the like

    「在另一種類型的預測中，即即震報警，超過一定限度的震波將發出電子報警，比發震時間有幾秒鐘的提前量，可以用於關閉核電站反應堆、燃氣和電力網等。
  5. According to the difference of the using characters of buildings, the heating system is divided into two categories, the continuous heating system and the intermittent heating system. to the intermittent heating system, it is essential to estimate accurately the preheat time. overestimation of preheat will cause unnecessary energy wastage whilst underestimation will lead to a loss of comfort conditions at the start of occupancy

    對預熱時間過分的估計（即tp的估計值大於實際值）會使在工作期未到來前房間的溫度已經達到了舒適溫度，這將導致燃料的浪費；反之，對預熱時間估計不足（即tp的估計值小於實際值）將使在工作期到來時房間的溫度還未達到舒適溫度，這使人覺得不舒適。
  6. It helps to know the status of program running and program communication. it gives intuitive references to find out performance bottlenecks and advices to optimize programs. to validate the applicability and validity of the system, the parallel program performance of combustion processes of liquid rocket engine is monitored and analyzed by using the analysis system

    為了驗證系統的實用性和有效性，運用該分析系統在機群上對液體火箭燃燒過程模擬程序進行了監測與性能分析，預測了程序的執行和通信時間，定位了該程序的性能瓶頸，給出了優化建議。
  7. This thesis presents the feasibility of nonlinear model predictive control implemented in spacecraft control and the optimality of increasing the control precision and decreasing the fuels expenditure. and the discussions are then focused on the simulation of spacecraft control using function - space model predictive control algorithm as mentioned below : 1

    本文的主要研究工作是探討非線性模型預測控制（ nmpc ）應用於空間飛行器自適應控制的可行性及對提高控制精度和減少燃料使用方面的優越性，同時利用函數空間模型預測控制演算法（ f - mpc ）對空間飛行器的位置和姿態控制進行模擬，具體內容如下：一
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