換氣比率 的英文怎麼說

中文拼音 [huànqìbǐlǜ]
換氣比率 英文
ventilation ratio
  • 換 : 動詞1. （給人東西同時從他那裡取得別的東西） exchange; barter; trade 2. （變換; 更換） change 3. （兌換） exchange; cash
  • 氣 : Ⅰ名詞1 （氣體） gas 2 （空氣） air 3 （氣息） breath 4 （自然界冷熱陰晴等現象） weather 5 （氣味...
  • 比 : Ⅰ動詞1 （比較; 較量高下、 長短、距離、好壞等） compare; compete; contrast; match; emulate 2 （比...
  • 率 : 率名詞（比值） rate; ratio; proportion
  • 換氣 : 1 （屏氣后再次呼吸） take a breath （in swimming）; aeration2 （通風） change of air換氣風扇 scav...
  • 比率 : ratio; proportion; rate比率計 ratio meter
  1. This paper researches and analyses the developments of web technology and magnetostrictive transducers from world wide region. the paper also analyes the characteristics curve of magnetostrictive transducers based on its equivalent circuit and researches the method how to make sure its syntony frequency and its electric simulation network parameters. at the same time, by using jsp technology, a magnetostrictive transducer electric simulation application is designed based on b / s three - tier system structure. the experiment data is fitted by curve fitting module. the equivalent input impedance of it with stimulate loop is separated based on the results of curve fitting and the syntony frequency and electric simulation network parameters of magnetostrictive transducers is determined by the input impedance. the method presented in this paper can determine the syntony frequency and electric simulation network parameters of magnetostrictive transducers with a better accuracy than the testing method of syntony & anti - synton y. further more, jsp, the advanced technology at current, has been used to realize a magnetostrictive transducer web electric simulation system. the system has good human computer interface and the function of resource sharing and information publishing. the research of this paper and its achievements have some practical merits in the researchful and applied fields of magnetostrictive transducer

    用java編程語言編寫的曲線擬合模塊，對輸入的實驗數據進行了最小二乘法的曲線擬合；根據曲線擬合結果可從帶激勵線圈的磁致伸縮換能器的輸入阻抗中分離出磁致伸縮換能器鐵芯在無激勵電流時由機械振動形成的等效輸入阻抗，並由此輸入阻抗確定磁致伸縮換能器的諧振頻率及電氣模擬網路參數。本課題提出的方法與傳統的諧振?反諧振法相比，能更準確地確定磁致伸縮換能器的諧振頻率及其電氣網路參數。同時，採用當前比較先進的web技術，實現了基於jsp的磁致伸縮換能器web電氣模擬系統，該系統具有良好的人機界面和資源共享、信息發布功能。
  2. Results show that the influence of mainstream reynolds numbers on heat transfer coefficience is little and the heat transfer coefficience raise with the increase of reynolds numbers. the influence of the position of holes on heat transfer coefficience is complex and correlate with the mainstream speed and the balde surface curvature. and the influence of blowing ratio on heat transfer coefficience is more great ( especially to stator ), and show a complex relation to mainstream reynolds number and the position of holes

    實驗結果表明，不同孔位出流的換熱由於孔排下游表面來流速度及葉片表面曲率的不同而有不同的規律，而主流雷諾數對葉片表面特別是壓力面和前緣區域的換熱系數比的影響較小，吹風比對換熱系數影響較大（特別是導葉） ，並且隨氣膜孔位置和來流雷諾數的變化而情況復雜。
  3. 3. on boiler retrofit, the calculation of fuel burning, the heat calculation of boiler inside structure and convection section, and the design of structure parameter of feed water heat exchanger are made. the flue gas channels " resistance calculation and the boiler strength verifying are also carried out. replacement of water cooling wall improves heat exchanging and decreases loss of heat radiant

    對鍋爐本體進行了燃料燃燒計算、爐膛結構熱力計算、對流受熱面結構熱力計算、鍋爐給水加熱器結構參數設計、煙道阻力計算及鍋爐元件強度校核等；改進了水冷壁布置使換熱效果更好，減少輻射換熱損失；改進對流段結構，更充分的利用爐膛出口煙氣余熱，提高熱效率；並且進行了煙氣阻力計算、熱效率計算和能量平衡測試，對改進后的稠油燃料和改進前進行了對比，燃燒狀況和熱效率有明顯改善。
  4. Under windows nt and labview development environment, using the linear fit module, exponential fit module > general polynomial fit module of labview to design a method for fitting the experiment data, the results of curve fitting indicate that the purpose of general polynomial fitting is better than the rest. separating the equivalent input impedance of magnetostrictive transducers without stimulate current from input impedance of it with stimulate loop based on the results of curve fitting, and determining the syntony frequency and electric simulation network parameters of magnetostrictive transducers by this input impedance. finally, with labview network functions, realizing magnetostrictive transducer electric simulation system based on web server and discussing a scheme for this system network by datasocket. the method of this paper can more accurately determine the syntony frequency and electric simulation network parameters of magnetostrictive transducers than the testing method of syntony & anti - syntony. at the same time, discussing virtual instrument measurement system and how to realize magnetostrictive transducer electric simulation network system by labview network functions of network virtual instrument measurement development environment

    在windowsnt系統環境和labview虛擬儀器技術開發平臺下，首次利用labview中的直線擬合模塊、指數擬合模塊以及多項式擬合模塊，設計了一種對實驗所得數據進行曲線擬合的方法，對三種擬合方法進行了比較，曲線擬合結果表明，多項式擬合方法相對于其它兩種擬合方法效果更好；根據曲線擬合的結果可從帶激勵線圈的磁致伸縮換能器的輸入阻抗中分離出磁致伸縮換能器鐵芯在無激勵電流時機械振動形成的等效輸入阻抗，並由此輸入阻抗確定了磁致伸縮換能器的諧振頻率及其電氣模擬網路參數；最後通過labview提供的網路功能，實現了基於web服務器的磁致伸縮換能器電氣模擬虛擬儀器測試系統，並探討了通過datasocket技術實現該系統網路化的方案。
  5. The moisture buffering effect of this layer depends very much on the air exchange rate and also on the ratio of the surface area of the buffer to the volume of the room

    濕緩沖效果依賴于空氣置換率和房間內多孔緩沖材料的表面積和空間的比率。
  6. Using lithium bromide aqueous solution as liquid desiccant, adopting the total heat transfer rate and enthalpy efficiency to describe the combined heat and mass transfer performance and the moisture removal rate and regenerative efficiency to describe the mass transfer performance of the regenerator, explores the effect of air and desiccant inlet parameters on the regenerator performance by experiment, and compares the result obtained with those of other counter - flow configurations previously published

    以溴化鋰溶液為除濕劑，採用總換熱量、全熱效率描述再生器的熱質交換總體效果，採用再生量、再生效率描述傳質效果，實驗測試了溶液和空氣的進口參數對再生器性能的影響，並與逆流再生器的實驗結果進行了比較。
  7. Combining burning and heat exchange as a whole, this furnace adopts the novel indirect heating technology of performing heat exchange at high temperature position of the furnace, inside which, smoke and air flow separately, heating has no contamination, thermal efficient reaches 60 - 75 %, therefore, it features speedy temperature rise, compact dimension, convenient installation, reliable operation and lower cost ( only half of that by boiler heating system )

    該爐集燃燒與換熱為一體以爐體高溫部分進行換熱的最新間接加熱技術，煙和空氣各行其道，加熱絕對無污染，熱效率高達60 - 75 % ，升溫快，體積小，安裝方便，使用可靠且價格低，與一噸鍋爐相比，該加熱系統只相當于鍋爐加熱系統價格的一半。
  8. These results can be used as a reference for optimization of polygeneration systems. the syngas generated from coal needs shifting reaction to adjust h2 / co ratio to fit the methanol synthesis requirement

    由煤制得的合成氣經過變換反應達到滿足甲醇合成要求的氫碳比，這一過程消耗了能量但提高了甲醇產率，在不同的甲醇產率下多聯產系統的效率隨之改變。
  9. It uses electronic control technology and places an oxide sensor in emission system, then according to the change of the rate of the air to fuel, adjust automatically the ejection of fuel. so it can improve dramatically the automobile performance. after installing three - way catalytic converter, it can make the pollutions lower 20 % ~ 50 % than the same vehicle, and the power of car reduce only 5 %

    對于適合我國現階段的電子閉環控制lpg燃料混合系統進行研究，此方法採用電子控制技術，在排氣系統中安裝了氧傳感器，可以根據排氣空燃比的變化，自動反饋調節供氣量，使燃氣汽車性能得到改善，安裝三元催化轉換器后，可以使污染物排放較同等水平的汽油車降低20 - 50左右，而發動機功率下降僅達5左右。
  10. It can also determine the fault spot and reason. this technology has been used in some technological fields and proved efficient. it has promoted the revolution of maintance system and the historial protection is replaced by preventive maintenance. with this technology, we can improve the reliability of machine and decrease the maintance fee. recently, reserch has pick up a fervent pace in the area of fault diagnosis of electrical machines. the paper simply analyzes the fault reason of electrical machines, stressly describes and explores the methods of condition monitoring and fault diagnosis such as partial discharge, stator current, rotating speed, vibration etc. fault prognosis is now include diagnostic feature, reason, spot. prodigious improvement in signal processing hardware and software has made this possible. primarily, these techniques depend on locating specific harmonic components of the fault. these harmonic components are usually diffirent for diffirent types of faults. automated tools such as fuzzy logic based system is also simply presented in the paper

    本文從絕緣結構的故障機理入手，以絕緣結構故障的典型特徵? ?局部放電為研究對象，重點討論局部放電的在線監測方法、適用場合併比較它們的優缺點；在分析籠型異步電機轉子斷條在線監測的定子電流監測方法后，根據其缺陷，本文探討了溫升不平衡法、希爾伯特變換數字濾波、小波包分析法的原理及優點；以電機軸承、氣隙偏心等故障為研究對象，通過對電機振動和轉速頻率的檢測，診斷電機的故障類型；本文的重點工作是將人工智慧技術中的模糊技術應用於電機的狀態監測和故障診斷中，力求使電機故障診斷更接近人工智慧化；最後，本文對電機狀態監測和故障診斷系統進行了硬體和軟體初步設計，為實現預測維修提供了有效的技術手段。
  11. In this paper, based on the wavelet theory which is considered an important breakthrough to fourier analysis, the variations of air temperature and precipitation during the recent 50 years in heilongjiang province have been analysed using the morlet wavelet transformation method. wavelet transformation with fourier power spectral analysis are compared

    本文以近年來被認為是fourier分析方法突破性進展的「小波理論」為基礎，採用morlet小波變換方法分析了黑龍江省近50年來的氣溫和降水的變化規律，並與傳統的功率譜分析結果進行了比較。
  12. Single - layer model is convenient to apply but the unclear relationship between radiative and aerodynamic temperatures is still a bottleneck in this field. a new method was developed to derive reliable surface heat fluxes from radiative temperature viewed from arbitrary zenith angle. aerodynamic and radiative temperatures are connected through a so - called optimum component fraction ( ocf ) parameter - the fraction of vegetation in the field of view when the two temperatures are equivalent in oblique viewing

    該方法利用表面熱輻射方向性和顯熱通量都是源於土壤和植被溫度的貢獻這一共同點，發現在一定傾斜角度的觀測下，視場中植被與土壤的比例可以較好地反映植被和土壤與大氣進行湍流熱交換的貢獻率，所以稱該方法為最佳組分面積比法，用最佳組分面積比可以將任意角度下觀測到的輻射溫度訂正為空氣動力學溫度，經過地面和遙感數據驗證表明，用該方法計算的通量精度高於普通的單層模型。
  13. The mass flow rate coefficients increase and achieve a constant at last with increasing blowing ratio. the influence of blowing ratio on the heat transfer coefficients and film effectiveness is complex

    流量系數隨吹風比的增大而增大並最終趨于某個定值，但吹風比對氣膜孔下游換熱系數和冷卻效率則較為復雜。
  14. The distribution of the mass flow rate, the heat transfer coefficients and the film effectiveness of cylindrical holes was measured. the influence of mainstream reynolds number, blowing ratio and the position of holes on flow rate, the heat transfer coefficients and the film effectiveness was studied greatly

    測量了氣膜孔的流量系數、氣膜孔下游換熱系數和冷卻效率的分佈，重點研究了主流雷諾數、二次流吹風比以及孔排位置對氣膜孔的流量系數、氣膜孔下游的換熱系數和冷卻效率的影響。
  15. Their body composition data were also assessed. the results show that maximal heart rate, maximal ventilation and oxygen uptake decreased with age, while the percentage of body fat increased with age in both genders

    研究結果顯示，不論男女，最大心跳率、最高換氣及攝氧能力會隨年齡增長而下降，但身體脂肪比例則跟隨年齡上升。
  16. The investigation reveals that the performance of a mea is mainly controlled by the conductivity of membrane, load of catalyst and co2 holding in the anode, ion conductivity and specific of active area in both anode and cathode

    研究表明，膜電極性能主要受質子交換膜的電導率、陽極催化劑用量、陽極co2氣體和陰極水的傳遞、催化劑層的活性比表面積和質子電導率等因素控制。
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