查询词典 ECT

The main problems researched in the dissertation and achievements are as follows: The dissertation explains the science background and the theoretical and actual meaning of the task. The progress and the problems of the flow imaging technique are briefly explained. The advantages of electrical capacitance tomography are discussed. The paper discusses the formation and operating principle of ECT, and builds up the definite mathematical model by detail theoretical analyse, and establishes the Finite Element Model of the system by changing the finite boundary value problem of ECT into equivalence variation problem according to variation principle. On the basis of the FEM of the system, the paper builds the finite element model of the capacitance sensitivity field distribution and programs its finite element simulation software and proves the validity of the FEM of the ECT from different aspects. With the FEM and the qualitative analyse of the effect of each structural parameter of the capacitance transducer on its capability, this paper optimizes the structural parameters of the capacitance transducer, and obviously improves its capability. The compare of the simulated result with the static experimental result shows that the error of them is less than 0.9%.

其主要研究内容包括：阐述课题研究的学术背景及其理论与实际意义，概括总结出流动层析成像技术的发展现状和存在的问题，指出电容层析成像技术的优点；讨论电容层析成像系统的组成及工作原理，进行详尽的理论分析，以变分原理为基础，将ECT的有限元边值问题转换为等价的变分问题，从而建立系统的有限元模型；在系统有限元模型的基础上，建立敏感场的数学模型，编制有限元的仿真软件，并从不同角度证明电容层析成像系统有限元模型的正确性；利用有限元模型，定性地分析电容传感器各结构参数对其性能的影响，并对传感器结构参数进行优化设计，使其性能得到明显的改善。8电极ECT系统的仿真和静态实验结果的比较表明，它们之间的相对误差小于0。

Ect of VaRforecast combination, set up the relation between diversification e?ect of VaR fore-cast combination and diversification e?ect of forecast combination under square loss.

借助于蒙特卡罗模拟技术，发现了风险值组合预测分散化效应的特殊性，建立了其与平方损失函数下组合预测分散化效应的联系。

Our aerial work products include the following: Movable Alluminum Alloy Ladderspan , Movable Insulative Ladderspan, Alluminum Alloy Ladder, Insulative Ladder, Aerial Platform, ect. And our safety protection products are including the protection series of SF6, such as: protection suits, gloves, protection shoes, filter pots, protection masks, breathing devices, ect.

公司经营的高空作业产品包括移动式铝合金快装脚手架、移动式绝缘脚手架、铝合金梯、绝缘梯、高空作业平台等；安全防护用品包括SF6防护产品系列包括SF6专用防护服、手套、防护鞋、滤罐、面罩、呼吸器等。

"If Mum already get up, finish the following household duties or or before 5:30pm according to the timetable 1. clean up the toilet bath tub, sink, toilet bowl, mirror… ect; 2. kitchen (clean up cupboard, stove, wall, ventilation fan… ect"

"11：00-5：30pm "，"开始做家务：若太太已经起床，然后根据时间表打扫 1 清洁及整理厕所(浴缸、洗面盆、马桶、镜) 2厨房(橱柜、煮食炉、墙、抽油烟机)，这些工作必需於5：30pm前完成。"

Components were identified which represented 65.66% of the total essential oil includding 9.12-octadecadienoic acid, ethyl ester and ect. 11 components were identified which represented 85.1% of the total essential oil by the silica gel column separately.conclusion 10 components were identified which included bicyclo (6,3,0) undeca-dien-3-one, 5,5-dimethyl ect.

结果超临界co2萃取物为黄棕色油状物，得率为0.9%，用gc-ms联用技术从中鉴定出亚油酸乙酯、5，5-二甲基-双环（6，3，0）-1，7-十一烯-3-酮等30种成分，占挥发油总含量65.66%；萃取物经硅胶柱色谱分离纯化，从中鉴定出十八酸乙酯等11种成分，占总含量的85.1%。

Our company is main to produce the DK7720～DK77120 series electricity spark the number controls the line to incise the tool machine,have the ±6°～±45°s sway the line of big degree of and tonnage cent the body type the line incises number to control the electricity spark models the machine,electricity the spark high speed bores hole the machine ect.20 various numbers control the tool machine serices product,and provide the HL,YH,HF and the list trigger ect.various plaits distance control the system provides the customer choice.

本公司主要生产DK7720-DK77120系列电火花数控线切割机床，具有±6°-±45°摇摆线架的大锥度线切割数控机床、电火花成型机、电火花高速穿孔机等二十多种数控机床系列产品，并提供HL/YH HF及单板机等多种编程控制系统供用户选择。

Next to a functional asp ect, there is an aesthetic asp ect of ligatures.

连字的出现的原因，除去功能上的需要，还有审美意义上的。

The circular centrifugal flotation cell has many originalities on the pulp aeration, air bubble mineralization, air pulp flow format in the ring shaped tank of the cell, feed method ect, due to the results of fluidics and turbulence and the action of centrifugal and gravitational force ect.

新型高效圆形离心浮选机充分发挥了湍流射流及离心—重力力场的作用，使其在矿浆充气、气泡矿化、浮选槽内矿浆流动形式、给料方式等方面独具特色。在普通喷动床环形区底部引入&充气&可消除环形区底部颗粒&死区&的影响，并能改善环形区气固间的热、质传递。

The circular centrifugal flotation cell has many originalities on the pulp aeration, air bubble mineralization, air pulp flow format in the ring shaped tank of the cell, feed method ect, due to the results of fluidics and turbulence and the action of centrifugal and gravitational force ect.

新型高效圆形离心浮选机充分发挥了湍流射流及离心—重力力场的作用，使其在矿浆充气、气泡矿化、浮选槽内矿浆流动形式、给料方式等方面独具特色。

"If Mum already get up, finish the following household duties or or before 5:30pm according to the timetable 1. clean up the toilet bath tub, sink, toilet bowl, mirror… ect; 2. kitchen (clean up cupboard, stove, wall, ventilation fan… ect"

&11：00-5：30pm &，&开始做家务：若太太已经起床，然后根据时间表打扫 1 清洁及整理厕所(浴缸、洗面盆、马桶、镜) 2厨房(橱柜、煮食炉、墙、抽油烟机)，这些工作必需於5：30pm前完成。&

Liapunov—Schmidt method is one of the most important method in the bifurcation theory.

Liapunov—Schmidt方法是分叉理论的最重要方法之一。

Be courteous -- even when people are most discourteous to you .

要有礼貌──即使当別人对你最不礼貌的时候。