convergent section 中文意思是什麼

convergent section 解釋
噴管的收斂部分
  • convergent : adj. 1. 漸集一點的，會聚性的；包圍集中的。2. 【數學】收斂的。n. 【數學】收斂子；漸近分數。
  • section : n 1 （外科、解剖的）切斷；切割；切開。2 【外科】切片，【金相】磨石。3 （果子的）瓣。4 【數學】截...
  1. Both theoretical proof and numerical experiments indicate that this algorithm is convergent and effective for solving large - scale semidefinite programming. in the following section, we work over the bisection problems

    數值實驗與理論分析均表明該演算法適用於求解大規模問題，且具有良好的收斂性；其次，研究了電路二等分問題。
  2. As far as the discussion about the structures is concerned, to some extent, it may be said to be an application to the backlund transformation : fix a solution qn to the system ( l. 3 ), construct a group of solutions qn different from qn through the backlund transformation, and then prove that qn is convergent to qn. in the section 4, it is vital for us to find out the fixed solution n to the equation ( 3. 1 ) in the theorem3. 2, which is completed in the lemma4. 2 and theorem4. 3

    第四節對方程（ 1 . 3 ）的解的性態的討論，在一定程度上也可說是對定理3 . 2的一個應用：給定方程的一個解q _ n ，然後通過貝克朗變換構造了一系列不同於q _ n的解q _ n ，之後證明了q _ n收斂于q _ n 。
  3. Shock tube ; conical convergent section ; detonation ; finite volume tvd scheme

    激波管收縮截面爆轟有限體積tvd格式
  4. The numerical simulation of axisymmetric two - dimensional shock tube is studied, which has a conical convergent section, and its driving gas is the hot product of hydrogen oxygen detonation. finite volume tvd scheme is adopted and the mesh is local orthogonal. the primitive equations are euler s equations of multi - component flow. the new method of eliminating numerical oscillation at the interface of two materials is extended to two dimensions. the mechanical character of this shock tube is analyzed

    對由前向爆轟產生驅動氣體並具有局部錐形收縮截面的軸對稱激波管利用兩相常比熱完全氣體的歐拉方程組和有限體積tvd格式在局部正交的網格上進行了二維數值模擬。將消除兩種介質界面處數值振蕩的新方法成功地推廣到二維情況。分析了該激波管的力學特性。
  5. A reasonable position of driving nozzle helps to achieve the maximum material flow that also depends on other parameters such as backpressure, properties of conveyed material and driving gas. it is observed that, an increase of convergent section angle is harmful to the pneumatic conveying system, and also influences on the mass flow rate of conveyed material, the distribution of static pressures in injector and the pressure drops of conveying pipe. in addition, within a reasonable scope of air mass rate, increasing the driving jet velocity is more advantageous than enlarging the dimension of driving nozzle

    試驗研究發現，氣體噴嘴位置對氣固噴射器的輸送能力影響最大，氣體噴嘴存在某一最佳位置，而這一最佳位置與背壓、輸送物料特性和輸送風特性相關聯；氣固噴射器的收縮角對其輸送能力、內部靜壓分佈和輸送管阻力特性均有適量影響，收縮角增大對整個輸送系統均不利；在適當的輸送風范圍內，提高氣體噴嘴出口速度比擴大氣體噴嘴尺寸更為有利，但氣體噴嘴出口速度過高會增加氣固噴射器和輸送管內的能量損耗，給輸送帶來不利的影響；系統背壓與氣固噴射器的氣體噴嘴出口速度的選取有關。
  6. This section first explains how the teachers train the ss " critical thinking in composition writing with the methods of logical positivism and falsification, then tries to seek to the training ways of critical thinking by way of divergent thinking and convergent thinking, putting forward the two living attitudes : oppugning and criticizing, which are related to the model of composition teaching with critical thinking

    2寫作與交流教學批判性思維的培養。這小節首先闡述如何用實證主義的證實和證偽的兩種方法在作文教學中培養批判性思維，然後運用求異思維、逆向思維去探討作文教學中批判性思維的培養路徑，並通過質疑和批判來強化作文教學中批判性思維的思想力度。
  7. In the first chapter, we narrate the characteristic of convertible bond, give some clues about development and actuality of the market and its pricing theory ; in the second chapter, we introduce modeling idea and some material problems in the model in detail, draw the yield curve which is very important to the model by spline method ; in the third chapter, we first explain the basic idea and convergent speed of monte carlo method, then, give the mathematical description for financial market, prove equivalence of non - arbitrage market, existence of risk neutral probability measure in the market and the price process of underlying asset is a martingale ; in the forth section, we introduce how to simulate stock price path by monte carlo method in detail, based on foregoing result, we prove the path is a martingale, thereby, the model is logical

    本文第一章先對可轉債的特點、市場發展和現狀及其定價理論的發展和現狀作一概述;第二章詳細介紹了建模思想和模型中的一些具體問題，利用spline方法繪出了在模型中具有重要作用的收益曲線;第三章首先敘述了montecarlo方法的基本思想和有關其收斂速度的一些性質，然後從數學的角度給出了對金融市場的描述，證明了市場無套利、市場存在風險中性概率測度及標的資產價格過程為鞅的等價性;在第四節中，對用montecarlo方法模擬的帶跳股價路徑作了詳細介紹，並利用前兩節的結論證明了模擬的帶跳股價路徑為一個鞅過程，從而保證了模型在理論上的合理性。
  8. Better agreements between computation results and experimental data were found using the models. ( 4 ) two phenomena in straight - convergent - divergent - straight microchannels were identified, which are different from the macroflow through experimental studies. one is that the first appearing sonic point position in microchannels is not near throat cross - section

    （ 4 ）對等直收縮擴張等直微管道中氣體流動的實驗研究發現兩個特異現象：其一為微管道內最早出現聲速點的位置不一定在喉部附近，其二為微管道中的臨界壓比與常規值有很大差別。
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