查询词典 homogenous

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。

A measurement pool is made by hanging a pair of nitrogen-filled small glass balls in non-homogenous magnetic field. The angle signal of the dumbbell ball torsion is magnified using light lever. In order to enhance the sensitivity and accuracy, CCD is used to probe the light signal spot. According to the magnetic susceptibilities of NO and NO2, the influences of these two gases on the analyzer are analyzed, and the application environment for the oxygen detector is discussed.

通过在非均匀磁场悬挂一对充氮玻璃小球构成测量池；采用光杠杆对哑铃球扭转的角度信号进行放大，由CCD对光点位置信号进行探测，以提高分析仪灵敏度和精度；由NO、NO2的磁化率特性分析这两种气体对分析仪的影响，说明测氧仪的应用环境。

Among the characteristics of the system are elevated angular dispersion, homogenous coverage and a high sensibility.

最突出的特点是宽阔的覆盖角度和高灵敏度。16 欧姆的输入阻抗让系统搭配更灵活。

It was homogenous as judged by SDS-PAGE and had an apparent molecular weight of 36 kDa under non-reducing conditions and 38 kDa under reducing conditions, respectively.

Jerdonitin在还原和非还原SDS-PAGE电泳中分别呈现一条表观分子量为38和36 kDa的条带。

The phylogenetic-tree analysis demonstrated that in Arachis the FAD sequence was conservative and highly homogenous to those in other species.

系统进化树分析表明，FAD序列在花生属植物进化过程中较为保守；与其他物种的FAD序列也具有较高的同源性。

Films with large and homogenous grain size and ratio of Cu/In approaching 1 were obtained at deposition potentials of -0.7 and -0.75 V vs the saturated calomel electrode and Na-citrate concentration of 500 mmol/L.

当沉积电位为-0.7和-0.75V vs.SCE、柠檬酸钠浓度为500mM时，能制得颗粒尺寸大且均一、Cu/In接近1的预制层。

Forty-five (78%) of the hemangiomas showed homogenous centripetal filling within 180 seconds.

45例（78%）肝血管瘤在180秒内表现为均质的向心性填充。

From these data it became clear that this large group of oxidoreductases is not homogenous.

从这些库中可以清楚的得到大量氧化还原酶是不同系的。

Semi-infinite model looks the foundation as a homogenous, continuous and elastic semi-infinite body, it can reflect the continuous deformation, especially suit to the close-grained thick terrene or rock slope which have good elastic property.

而且在以前的计算中，都没有考虑框架与坡面之间强大的摩擦力引起的框架梁内力变化。

HRM has several advantages over other genotyping and scanning methods, including an inexpensive closed tube format that is homogenous, accurate and rapid.

这种检测方法因其高通量、低成本、结果准确、不受检测位点的局限，并且实现了真正的闭管操作而受到普遍的关注。

Warden: That's a beautiful dog, but don't bring her again.

那是条漂亮的狗，但是不要再把她带来了。

You get up in the morning – no hangover!

你第二天早上起来的时候—不会宿醉！