熱時常數 的英文怎麼說

中文拼音 [rèshíchángshǔ]
熱時常數 英文
thermal time-constant
  • 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...
  • 數 : 數副詞（屢次） frequently; repeatedly
  1. Second, the starting and stopping behaviors under disturbed condition are analyzed and calculated by using the dynamic concentrative parameter model, which gives some advice to better prescribe refrigeration system and set theoretic foundation for carrying out automatic control of refrigeration system. third, the normal running process is analyzed and calculated by means of rational matching theory, which gives some advice on how to better understand the parameter change under steady state and the affection of inlet - parameter on evaporator. fourth, the simulation software with dynamic characteristic is designed, which can be applied to calculate thernio - parameter of cryogen, air humidity and frost thickness under different initial and boundary conditions, and to carry out dynamic simulation under conditions of dryness, wetness and frostiness, at the same time, to achieve detection and simulation at any stage from starting to stopping

    本文的主要內容如下： 1 ）對翅片管蒸發器結構特點進行分析，選取適當的微元控制體，就干、濕和霜工況下對每個微元分別進行傳熱傳質分析，基於經驗關系式確定霜的有關參數，對于霜工況下的霜生長建立模型，經適當假設，運用質量守恆、能量守恆和動量守恆方程建立適合動態模擬的蒸發器數學模型，為系統模擬奠定基礎； 2 ）對蒸發在大擾動下的開、停機過程，運用動態集中參數模型進行分析和計算，為更好地描述製冷系統運行的全過程奠定基礎，同時也為製冷系統實現自動控制提供一定的理論基礎； 3 ）對蒸發器正常運行過程，運用動態分佈參數和參數間定量耦合的觀點來分析和計算，為更好地了解穩態工況下各點參數的變化情況及各入口參數對蒸發器動態特性的影響即蒸發器性能對各參數變化的敏感性； 4 ）編寫翅片管蒸發器動態特性模擬計算程序，可以計算不同邊界條件和初始條件下的製冷劑熱力參數、空氣溫濕度和霜厚度分佈場，實現對翅片管蒸發器在干、濕和霜工況下的動態模擬。
  2. For a ball domain and a constant angular velocity, both existence theorem and non - existence theorem are also obtained by using the time - maping method, depending on the adiabatic gas constant r

    其中，在球形區域中有以下一些結果：我們通過打靶法得到了，當角速度是常數時，方程組（ 0 . 1 ）解的存在性和非存在性。而且該解依賴于絕熱常數。
  3. Having reacted with copper, paa becomes complex. the complex decomposes after heat treating and cause the increase in dielectric constant and reduction in dielectric breakdown strength. otherwise cu2o and cuo emerge from the complex, too

    N與cu反應后，形成絡合物，熱處理時自身降解，擊穿強度降低，介電常數提高； cz在熱處理后從絡合物離解出來形成cllo和cuzo 。
  4. Fourth, the electrorheoldgical fluids composed of pan / batio3 nanocomposite and chlorated paraffin oil are prepared and the relationship between dielectric performance and electrorheological effect are discussed. fifth, the advantage and disadvantage of electrorheological fluids composed of different structure pan - batio3 nanocomposite are compared, which put a favorable basis for farther design and prepare electrorheological fluid with high performance

    研究結果表明：鈦酸鋇納米粉末在900處理時為最佳，隨熱處理溫度的升高，粒徑長大，而其介電常數隨著粒徑長大，逐漸降低，在相同條件下，隨溫度的升高，鈦酸鋇納米粉末的介電常數在120出現最大值。
  5. The results indicate that ( a ) before heat treatment, with the increasing of substrate temperatures, content of lower valency ( tij + ) decreases, the stoichiometric proportion of o / ti in all samples is about 2 ; the films have amorphous incompact columnar fiber structure, and with the increasing of substrate temperature, the size of columnar fiber increases ; the films have good hyalescence in visible range and great absorbability at the wavelength of 350nm ; optical constants of the films are calculated from the transmittance spectrums in visible range by mathematical analysis of the orders of interference, the results show that the refractive ind

    研究結果表明， （ a ）熱處理前，隨著基片溫度的增加，薄膜中的低價氧化鈦含量逐漸減少，化學計量比趨于o ti = 2 ；薄膜具有非晶態不緻密的柱狀纖維結構，柱狀纖維的尺寸隨基片溫度的升高而增加;薄膜在可見光范圍內透明，在波長為35onzn時嚴重吸收，利用干涉級次法分析了薄膜的光學常數，結果表明，薄膜的折射率隨基片溫度的升高而增加，根據計算結果得到了tioz薄膜在不同基片溫度下的折射率色散曲線。
  6. Abstract : determined the power - time curves of the promoter bacteria of ganoderma lucidum for e. coli, using 2277 thermal activity moniter, a new experimental model of promoter bacteria growth were established. the growth rate constant and heat output at different concentration of ganoderma lucidum have been calculated. from - c and q - c curves the optimum concentration has also been established

    文摘:用熱活性檢測儀測定了天然藥物靈芝對大腸桿菌起促菌作用的熱功率-時間曲線，並根據曲線建立了細菌生長的新的實驗模型，按新模型計算了促菌作用下的生長速率常數，發熱量及最佳促菌濃度。
  7. 4. the inspection standard has been appraised. the air stagnation parameter and water stagnation parameter are enough to evaluate the quality of evacuated solar tube and the heat loss co - efficiency can be cancelled

    用空曬性能參數和悶曬性能參數來評價太陽能真空集熱管的好壞即可，取消平均熱損系數指標，空曬性能參數反映高溫能力，悶曬性能參數反映正常工作時的升溫能力。
  8. In the area of oil and gas prediction, the common used means is geochemical logging when classifying them by pyrolysis parameters. but the result of classification is not very satisfied and the precision is not very high

    在油氣預測領域中，當利用熱解參數進行油氣層分類時，通常採用的方法是地球化學錄井技術，但使用該方法所獲得的結果精度不夠高，不能令人十分滿意。
  9. The experimental results are compared with the existing criterion and model so as to obtain the optimal overload protection model, viz. exponential heating and cooling equations, which can be used for protecting motors. based on the selected overload protection model, a thermal protector with single - chip is designed in this paper

    利用該裝置測試了被試樣機在不同負載率下的發熱和冷卻過程，並把實際測試結果同現有的電動機熱保護標準和熱過載保護模型作了對比，在分析和討論了各種標準和熱過載保護模型建模機理的基礎上，得出了最佳的、可供單片機式熱保護器使用的熱過載保護模型，即雙時間常數的指數發熱和冷卻方程。
  10. The relationship of true stress and true strain for the mid - strength weldable 1420 aluminum - lithium alloy has been investigated in this thesis by high temperature compression testing and high temperature tensile testing on different hot deformation conditions. the interdependence of flow stress, strain rate, strain and deformation temperature for the alloy at high temperature has been studied

    本文通過高溫壓縮和高溫拉伸試驗，研究了中強可焊1420鋁鋰合金熱變形時不同變形條件下的應力-應變關系、變形條件對合金流變應力的影響；運用多元回歸分析方法，採用c語言編程確定了合金的本構關系方程；引入z參數，求解了部分材料常數，並用於材料的組織性能研究中。
  11. Furthermore, the exposure schedule for recording holograms with equalized diffraction efficiency is designed based on the above - mentioned optical erasure time constants

    並且依據上述兩種光擦除時間常數，為分批存儲熱固定多重全息圖的等衍射效率記錄設計了曝光時序。
  12. Thermal time - constant

    熱時常數
  13. At a given cooling rate, the degree of undercooling increases with increasing overheated temperature, and tends to be constant at last. it suggests that higher undercooling can be reached by increasing the overheated temperature in a stated range. at a given overheated temperature, the undercooling increases with cooling rates within the range of measurement

    在冷卻速率一定的情況下，熔體的過冷度隨著過熱度的增大而增大，而隨著過熱度增大到一定程度，熔體的過冷度趨向于常數；這說明採用dsc與助熔劑處理技術研究熔體的過冷現象時，可以通過在一定范圍內提高過熱度來獲得較大的過冷度。
  14. Nonlinear constant r | could be calculated according to the numbers of the diffraction rings. the sample ' s optical limiting properties were discussed. according to the experimental results, we estimated that the main mechanism of the optical limiting was from the thermo - optic effect

    對2 -甲氧基5 -丁氧基取代ppv氯仿溶液進行了激光誘導自衍射實驗，根據衍射環的個數估算出了樣品的非線性常數；同時還對該樣品進行了光限幅特性的研究，由實驗結果分析得出：由光熱效應引起的自衍射是產生光限幅特性的主要機制。
  15. By close study on the average temperature rise, temperature distribution, and tune constant of the class f resin dry type power transformer ' s high voltage and low voltage winding under self - cooling and wind - cooling mode, we find out the connection between the variation of the load and the items, mentioned above. the results of the experiments can be reference to both thermal design optimization of dry type power transformer and the revision of current standards. meanwhile, we develop the software, which can predict the overload ability of the dry type power transformer

    本文對f級樹脂澆注式乾式變壓器的高、低線圈的平均溫升，內部溫度分佈和時間常數在自冷和風冷，兩種冷卻方式下隨負載變化的規律進行了研究，得出了平均溫升、熱點溫升和時間常數隨負載變化的相互關系和有關計算用參數和公式，試驗結果可作為改進乾式電力變壓器的熱設計的依據和對現行標準進行修改的參考。
  16. Fractal porous media can be simplified as a kind of binary mixture with different thermal conductivities. the calculated results show that heat transfer in fractal porous media is very complicated, the thermal coupling effect of matrix with pore structure is studied. when heat transfer in pore structure is neglected, the effective thermal conductivity for random sierpinski carpet is scaled up with the percent of matrix, which is described by the classic archie ' s law

    本文首先採用有限容積法分析了分形多孔介質中的熱傳導過程，多孔介質可以視為二元混合介質，計算中發現分形結構中的導熱規律非常復雜，基質與孔隙之間存在著很強的相互換熱，當不考慮孔隙氣體中的導熱時，本文所構造的隨機sierpinski地毯上導熱系數與基質率（基質百分含量）大多呈指數關系，這與archie定律的結果是-致的。
  17. By means of the measure of entanglement called " concurrence ", we study the entanglement in heisenberg a single molecular magnets dimer v + with a strong magnetic field and find that thermal entanglement exits for both ferromagnetic ( fm ) and antiferromagnetic ( afm ) cases. in fm case entanglement vanishes for anisotropic parameter value = 0, while in afm case, entanglement exits in the whole region of anisotropic parameter 0 < < 1. an interesting conclusion is that the critical temperature is independent of the magnetic field

    應用糾纏的一種測量「 concurrence 」 ，對自旋二聚物v ~ （ 4 + ）在外加強磁場情況下的熱糾纏進行了研究，發現對于鐵磁和反鐵磁兩種情況，熱糾纏都存在；鐵磁情況下，在各向異性常數等於零的時候糾纏消失，而對于反鐵磁在整個各向異性常數變化范圍內糾纏都存在，有意思的是我們發現臨界溫度獨立於磁場b ，我們也研究了糾纏度隨各向異性常數、磁場和溫度的變化。
  18. The dielectric constants of silica - rich, alumina - rich, and stoichiometric mullite ceramics are 5. 5, 6. 0 and 6. 3 respectively. the dielectric constant of mullite - si / c / n composites is related with the sintering parameters. with the increase of the sintering temperature and dwelling time, the " " and tg of mullite - si / c / n composites are decreased, this phenomenon is related with the change of the microstructure and phase composition of nano si / c / n powders

    莫來石- si c n復合材料的介電常數與熱壓燒結工藝有很大的關系，隨熱壓燒結溫度（ 1450 1600之間）的升高，燒結時間（燒結溫度為1550 ）的增長，莫來石- si c n復合材料的介電常數實部、虛部及介電損耗角正切均明顯下降，這與吸收劑的性質隨溫度和時間的變化有關。
  19. This system has been used since nov. 2000, it indicate that " one control two " system is feasible and excellent from historical trend curve of some important thermal engineering parameters and user recorded data, not only reduce cost and labor intensity, improve economic performance, but also ensure safely producing safely and operating easily, this system have novel, advanced, and useful characteristic

    自2000年11月該監控系統投入使用以來，從一些重要熱工參數的歷史趨勢曲線和用戶記錄數據中可以看出， "一控二"微機自動監控系統是可行的?優良的，達到了降低成本，減輕工人勞動強度，提高經濟效益，同時又保證安全正常生產和操作簡便的目的，具有新穎性
  20. After the above work, a universal zero - dimension fault simulation model of diesel engine is built. thirdly, according to the constructed simulation model, a faults simulation software is developed in the environment of visual c + + 6. 0, which can simulate some typical engine malfunctions, such as leakage, block, time - sequence error and have a friendly simulation interface

    該軟體可以模擬泄漏、阻塞、時序或相位錯誤等典型的柴油機熱工故障，並具有友好的模擬界面，通過熱工故障模擬數據庫和熱工參數模擬曲線，可以明顯看出故障狀態下柴油機各熱工參數的異常變化。
分享友人
分享到 Line

分享到臉書