取得

Main contributions and achievements are as follows:A general non-equilibrium rigorous model for RDP is developed in this thesis. Based on the pseudo-homogenous assumption, two main factors reaction and separation are de-coupled, and an RDP model with the same format as that for a traditional distillation process is established. To solve the model with a large number of algebraic equations, modified M-K equations with tri-diagonal matrix form are developed based on the improved Separation Efficiency Functions, which greatly increases the iteration efficiency. This thesis also develops a general reactive distillation dynamic model. Through splitting of the differential variables based on SEFS, large-scaled differential algebraic equations can be solved with the improved Gear's algorithm which makes the dynamic model suitable for the on-line application. A simulation platform for the control loop design and evaluation of RDP by introducing control system equations into the dynamic model is also developed.A lactic acid purification pilot-scale RDP is investigated.

论文对热点问题——反应精馏过程的建模与优化控制相关技术进行了深入的研究，取得了一系列成果：1、建立了反应精馏过程机理模型，基于拟均相假设，将反应和分离过程进行解耦，推导出反应精馏过程的非平衡级稳态模型和动态模型，通过引入推广的分离效率函数，对模型变量进行了合理划分，显著提高了模型求解效率；将动态模型和控制系统方程结合，建立了反应精馏过程控制系统研究的辅助工具。2、全面分析了乳酸提纯反应精馏新工艺试验装置，利用本文建立的过程机理模型，对该试验装置进行了稳态和动态性能分析及水力学核算；设计和分析了单边质量控制方案，比较了间接和直接物料平衡控制两种方案的控制性能。

Experimental results show that the accurate reduction and the average algebraic sum all obtain the preferable values.

最后通过两个经典算例进行了验证，无论在约简的准确性上，还是平均运行代数上都取得了较好的结果。

Charlie flees back to New York with Algernon and gets his own apartment, where the scientists cannot find him.

查理逃离回纽约与阿尔杰农，取得自己的公寓，那里的科学家们无法找到他。

In 20 00 , Keyes published a book called Algernon, Charlie, and I: A Writer's Journey, chronicling his relationship with his most famous story, from his first inspiration to write it to his reflections on its continuing success decades later.

在20 00 ，凯耶斯出版了一本书叫做阿尔杰农，查理，我：一个作家之旅，记载他与他的最有名的故事，从他的第一个灵感写他思考了20年后继续取得成功。

A lot of people say, we should not get the algorithmic flaw that searchs engine to obtain good rank.

很多人说，我们不应该钻搜索引擎的算法漏洞去取得好的排名。

Gains from the alienation of any property other than that referred to in paragraphs 1, 2 and 3 shall be taxable only in the Contracting State of which the alienator is a resident.

四、转让第一款、第二款和第三款所述财产以外的其他财产取得的收益，应仅在转让者为其居民的缔约国征税。

Gains from the alienation of any property other than that referred to in paragraphs 1,2 and 3 shall be taxable only in the Contracting State of which the alienator is a resident.

此外，关于征税权的问题，协定第13条第四款规定转让第一款、第二款和第三款所述财产以外的其他财产取得的收益，应仅在转让者为其居民的缔约国征税。

Gains from the alienation of any property other than those as mentioned in Paragraphs 1 through 3 shall be taxable only in the party of which the alienator is a resident.

四、转让一个公司财产股份的股票取得的收益，该公司的财产又主要直接或者间接由位于一方的不动产所组成，可以在该一方征税。

Gains from the alienation of any property other than those as mentioned in Paragraphs 1 through 3 shall be taxable only in the contracting state of which the alienator is a resident.

四、转让第一款至第三款所述财产以外的其它财产取得的收益，应仅在转让者为其居民的缔约国征税。

Gains from the alienation of any property other than that referred to in the foregoing paragraphs, shall be taxable only in the contracting state of which the alienator is a resident.

六、转让上述各款所述财产以外的其它财产取得的收益，应仅在转让者为其居民的缔约国征税。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！