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Through a great number of objective analysis for sound characteristics and subjective audition experiments, new sound quality parameters used in mechanical and electronical products are proposed.Firstly, the source characteristics of cars and air-conditions are analyzed.

首先，本文明确了声质量的定义、摸清了研究现状，指出仅以A声级进行声质量客观评价的局限性，在分析汽车和空调噪声的声源特性后，确定以A声级结合响度、尖锐度和波动强度三个心理声学指标来作为机电产品声质量客观评价的基础参数。

A number of search engines these days will catalog dynamic content, but even for those engines which do, a static page is 10 to 100 times more likely to be cataloged than a dynamic page.

一些搜索引擎的这些天，将目录动态内容，但即使是对於那些引擎做的，是静态页面的10至100倍，更容易被归类比一个动态网页。

After a few days again, off-white body of the silkworm a number of large, almost my little finger so rough, it is also the beginning of the food to a staggering, almost every minute in the non-stop to eat mulberry leaves, as if it is their own future in order to accumulate sufficient when cocooning energy.

又过了几天，灰白色的蚕宝宝身子又大了许多，几乎有我的小手指那么粗了，它的食量也开始大得惊人，几乎每时每刻都在不停地吃桑叶，好象是在为了自己日后结茧时积累足够的精力。

Electric power system harmonic is one of the most important parameters. With the development of electric power and electron technology, a number of the nonlinear loads and all kinds of commutating equipments are widely applied in every walk of life, what they bring a mass of harmonic current make the content of harmonic increase in the power system and quality of power drop.

电力系统谐波是电能质量的重要参数之一，随着电力电子技术的发展，大量的非线性负载和各种整流设备被广泛的应用于各行各业，使电网谐波含量大大增加，电能质量下降。

We will see a number of films, as a way to consider the difficulties of dramatizing and analyzing historical events on film, as well as a source of information.

我们会看一些电影，并通过影片思考把內容戏剧化以及在电影中分析历史事件时遇到的难点，並将其作为一种信息来源。

We will see a number of films, as a way to consider the difficulties of dramatizing and analyzing historical events on film, as well as a source of information.

考虑到把内容戏剧化和在幻灯片上分析历史事件的难度，我们会放映一些影片资料，并把它作为了一种信息来源。

We will see a number of films, as a way to consider the difficulties of dramatizing and analyzing historical events on film, as well as a source of information.

考虑到把内容戏剧化和在幻灯片上分析历史事件的难度，我们会放映一些影片资料，并把它作为了一种资讯来源。

First contact is being encouraged by a number of people in the higher echelons of government and we are in a position to help you create the foundations for a new reality.

第一次接触已经被政府高层一定数量的人鼓励了，我们有能力帮助你们创建一个新的基础。

A number of officials working for a Deputy Prime Minister have sued the editor of a newspaper for its stories implicating them in corruption.

一群为副总理工作的官员因某报纸编辑，因为此报纸刊载了隐射他们腐败的报导。

Rule Eleven - If, after intuiting a number of simple propositions, we deduce something else from them, it is useful to run through them in a continuous and completely uninterrupted train of thought, to reflect on their relations to one another, and to form a distinct and, as far as possible, simultaneous conception of several of them.

如果在直观了许多的单纯命题之后，我们演绎出一些不同的东西，透过一种连续、完整无中断的思想流来反省它们彼此的关系是有用的，同时，尽可能地形成一个同时的明白的概念。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。