長度守恆 的英文怎麼說

中文拼音 [zhǎngdùshǒuhéng]
長度守恆 英文
conservation of length
  • 長 : 長Ⅰ形容詞1 （年紀較大） older; elder; senior 2 （排行最大） eldest; oldest Ⅱ名詞（領導人） chief;...
  • 度 : 度動詞[書面語] （推測; 估計） surmise; estimate
  • 守 : Ⅰ動詞1 （防守; 看守） guard; defend 2 （守候; 看護） keep watch 3 （遵守; 遵循） observe; abide b...
  • 恆 : Ⅰ形容詞1 （永久; 持久） permanent; lasting 2 （平常; 經常） usual; common; constant Ⅱ名詞1 （恆心...
  • 長度 : length; longitude; size; extent; footage
  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. ( 4 ) to raise the computational accuracy and efficiency, we have designed a self - adaptive space grid that can guarantee mass conservation and energy conservation, and have also developed the techniques for the time stepsize automatically varying

    （ 4 ）設計了保持質量和能量守恆的自適應空間網格，發展了自動改變時間步長的技術，使之能夠更好地保證計算精度，提高計算效率。
  3. The phase matching and group velocity matching conditions of type - i and type - ii second harmonic generation ( shg ) are obtained according to the momentum and energy conservation laws. the group velocity delay of ultrashort pulse shg on clbo and the crystal length decided by the group velocity delay are analyzed and compared with bbo ' s

    從動量守恆、能量守恆出發推導得出了超短脈沖倍頻的類、類相位匹配和群速匹配條件，對clbo晶體用於超短脈沖倍頻時的群速延遲以及由群速延遲決定的晶體長度進行了分析和數值模擬，並與bbo晶體進行了比較。
  4. By considering the influence of heat relaxation time and heat relaxation length, fourier law was modified to fit the drastically changing of temperature in micro time and space scale, especially the time and space microscale effects were introducer simultaneity. and relevant conduction differential equations were established through combing the energy conversation law

    考慮到熱鬆弛時間和熱鬆弛長度的影響，對在微小時間和空間尺度內溫度劇烈變化的熱傳導問題給出了同時考慮時間和空間微尺度效應的修正的fourier定律，結合能量守恆定律建立了相應的熱傳導微分方程。
  5. We have calculated the type - i and type - ii angle tuning curves of clbo according to the momentum and energy conversion laws, and the sellmeier equations of clbo. by comparing to that of bbo, we can see that the shortest wavelength of clbo is shorter than that of bbo both in type - i and type - ii phase - matching, especially in type - ii. from it we can see clbo is really a new kind of nlo crystal in opo

    從動量、能量守恆和clbo晶體的sellmeier色散方程出發，給出了clbo晶體、類相位匹配的角度調諧曲線，並與bbo晶體進行了比較，得到了在類相位匹配和類相位匹配情況下， clbo晶體的最短波長都比同等條件下的bbo短的結論，尤其在類相位匹配時性能更加優良。
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