高价

So I think some of the reasons that people were willing to pay a high price for risky securities have been curtailed.

因此他认为，曾让人愿意为高风险证券付出高价的一些理由已经不存在了。

In chapter Ⅰ, a historial review of structure control is given; In chapter Ⅱ, A discussion of the controllability and observablity of flexible structures is given, Two kinds of controllability and observablity index are defined, and applied to actuator allocation; chapter Ⅲ considers the reduction of high order flexible structure mode; the content of chapter Ⅳ is about the basic problem of distributed parameter control system design. It is proved that a stable controllor in mode space may be unstable in real use in distributed paramater systems, also, by closed loop mode concept, a pole assignment method of flexible structure controllor design is given; chapter Ⅴ is about the low-authority controllor design, it is pointed out by use of high order eigenvalue/eigenvector perturbation, a better controllor can be designed; chapter Ⅳ considers flexible structure reduced order control; chapter Ⅶ disscusses the basic problem of flexible structure computer control, analyses discreate controllablity and observablity and its computing, the sample period and coefficient wordlength; chapter Ⅷ is on the problem of low flexibility compensation; chapter Ⅸ is a design example.

在第一章简要回顾了挠性结构控制的历史，并且指出控制中的一些问题；第二章讨论了挠性结构的能控性与能观性，定义了两类能控性程度和能观性程度指标，还将能控性程度概念应用于执行器位置的确定；第三章论述了高阶模型的降价问题，比较了适于挠性结构模型降阶的方法，指出其适用范围；第四章内容是分布参数系统设计的基本问题，首先证明在模态空间中设计的稳定的控制器在实际分布系统上可能是不稳定的，进而根据闭环模态的概念，获得挠性结构控制器设计的极点配置方法；第五章的内容是关于低权控制器的设计问题，指出利用特征值高价摄动和特征向量的摄动，可以设计出更加完善的低权控制器；第六章讨论挠性结构降阶控制问题；第七章讨论挠性结构计算机控制的基本问题，分析了时间离散化模型的能控性和能观性及其计算问题，讨论了采样周期选择和系数字长问题；第八章讨论低挠性结构的补偿问题；第九章的设计例子用来说明第二章和第四章的结果。

A satisfactory result was obtained in synthesis that using the material of high reactivity and high valence such as PPh3I*. The research area of material in electrosynthesis has been extended.

本文还重点研究了非水体系中不含酸性氢原料(I_2)的电化学反应机理，提出以电化学反应活性强的高价氧化态物质(如PPh_3I~+)作为阴极反应原料，在合成中取得了满意的结果，拓展了非水介质配合物电化学合成原料的研究和应用范围。

II. Oxidation of α,β-Unsaturated Ketones with Hypervalent Iodine Reagent Literatures reported that lead acetate-borontrifluoride etherate (LTA/BF3-Et2O) can transform α,β-unsaturated ketone to β,γ-unsaturated carboxylic acid ester through an one-step oxidative rearrangement reaction. Our research along this line indicated that hypervalent iodine reagents can also affect the same reaction.

II。 高价碘对α，β-不饱和酮之氧化研究先前已有文献指出用leadacetate-borontrifluoride etherate (LTA/BF3-Et2O)做氧化剂，可以经由一步的重组氧化反应把α，β-不饱和酮(α，β-unsaturated ketones)氧化成β，γ-不饱和碳酸酯(β，γ-unsaturated carboxylic acid esters)衍生物。

The technology used in the Bubble Tag has already been approved by authorities such as the Swiss Institute of Gemmology or the French Ministry of Industry for and is currently used on many official documents, high value branded products and valuable works of art worldwide.

Bubble Tag中采用的技术不仅已得到许多权威机构的批准，比如：瑞士宝石学研究所或法国工业部，而且目前也在世界各地的许多官方文件、高价品牌产品和贵重艺术品中得到应用。

He bought the hause at a terribly low price,and sold it at a high price a few years later.

他以极低的价格购入此房，几年后又以高价卖出。

Common condensation compounds appear hooped, with the size of 50~300nm.

常用的多价阳离子包括阳离子聚合物，蛋白质，高价无机离子等。

Leamer added that "later is not necessarily better" for a correction in the housing market, as each month of higher prices increases the size of the adjustment ahead.

Leamer 补充说，&晚发生不一定更好&，当他谈到房产市场的修正，每一个月的高价，都会增加叠加的幅度。

It can be divided into four methods to prepare manganic manganous oxide from the raw stuff: electrolytic product of manganese、manganous salt、manganese oxide compound and manganese carbonate.

四氧化三锰的生产方法主要有四种：金属锰悬浮液法、锰盐法、高价锰氧化物法以及碳酸锰法。

For example,the addition reaction with small molecular,the metathetical reaction with alkynes and Wittig reaction to prepare high-valent transtion-metal allenylidene complexes.

对于化合物11，详细研究了其与小分子加成反应、炔烃复分解反应以及通过Wittig反应制备高价态过渡金属丙二烯基卡宾化合物。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。