英文翻译成中文(摘要)
Frequency detection is the most basic electronic measurement field is one of the most important measurement. Frequency signal strong anti-jamming ability, easy to transport and can obtain high measuring accuracy of measurement, many parameters such as time, speed etc. Into frequency measurement, the precision requirement has been reached. The application of frequency range is very wide, not only applied to general instrument measurement, can also be used in industrial control and other fields, so the study method of measuring frequency more and more attention.
This design USES frequency measurement accuracy etc with AT89C51 principle, and some basic logic circuit design of high frequency of general design of reliability and practicability. As a system master AT89C51, of the whole circuit test signal control, data processing, keyboard scan and operation control of the digital display output, control tube. Use frequency measurement precision theory, from the principle error, and overcome by signal measured in the whole range for measuring precision measuring range, etc 10MHz - from 0.01 speed,
This paper discusses the design of the system, hardware circuit components and parts, proteus practical single-chip programming design, analysis and simulation software error and achieve high measuring accuracy and measurement speed
toxic什么意思
toxic[英][ˈtɒksɪk] [美][ˈtɑksɪk] 生词本简明释义adj.有毒的；中毒的；因中毒引起的n.毒物；毒剂复数：toxics以下结果由 金山词霸 提供柯林斯高阶英汉词典 网络释义 百科释义 同反义词1.ADJ-GRADED有毒的；毒性的；引起中毒的A toxic substance is poisonous....the cost of cleaning up toxic waste...清除有毒废弃物的成本These products are not toxic to humans.这些产品对人类没有毒性。
请教英语高手 能帮我用英文翻译下这段 中文摘要 好吗？ 由衷的感谢啦
摘 要 ：颜色对于我们人类具有极其重要的意义——它是视觉审美的核心，深刻地影响我们的情绪状态。
Pick to: color for we humans have very important sense -- it is the core of visual aesthetic, a profound influence on our emotional state.
平面设计是由图形、文字、色彩等基本要素组成，最终通过色彩来表达。
Graphic design is by the graphics, characters, the color and so on basic components, ultimately through color to convey.
而现今，大多大众化的平面设计都是为商品服务的，例如海报、包装、样本等，由于人们在购物时总是先注意列物体的色彩，然后才注意其形状或其他特征，适当的色彩选择就是为了更好的表现商品、吸引消费者，最终促进产品的销售。
And now, most popular graphic design is for goods and services, such as posters, packaging, sample, because people always look at shopping list, and then the colour of object its shape or other characteristics of attention, the appropriate color choice is to better performance goods, attract consumers, and eventually promote the sale of our products.
据研究，人们对外界刺激的接受，83％依赖于视觉媒介的作用，在人对物体形象第一印象的关键30秒内，色彩总是先映人眼帘，而给人留下的整体印象强烈。
According to research, people foreign stimulates accepts, 83% dependent on visual media role, in the person of the key body image first impression 30 SEC, colour is always first reflects people eye, and to make strong the overall impression.
极具有视觉冲击力。
Extremely strong visual impact.
有谁吃过OPC产品啊？
PC类的产品,它是“能吃的化妆品哦”，纯天然的，是迄今发现的植物来源可用于人体的最
高效的抗氧化剂，其抗氧化能力是VC的20倍，VE的50倍；也是唯一能透过血脑屏障的抗氧化剂。它能够起
到清除自由基，提高免疫力的作用，因而能延缓衰老，使皮肤恢复昔日的细腻白嫩。
“天选 OPC”是一种纯天然的营养、美味、无糖、复方等渗透冲剂，口感好易吸收，是生物黄酮类综合体。它采用美国色素研究中心（American Color Research Center,Inc）最新研发成果及美国进口原料分装而成，品质优于目前美国最畅销的同类产品。
谁对PDF比较熟？我有100张图片，能做成一个100页的PDF文件？还有……
你好
非PDF的图片格式文件转成PDF文件的软件很多 我这里推荐你使用pdf factory
安装后只需要在打印项中选择虚拟打印机“pdf factory”即可批量转换成一个
多页PDF文件。(如Photoshop打印项或windows XP 默认图片打印项)
而如果你只是想合并已有的PDF文件，那只需下载安装Adobe Acrobat 即可解决
Adobe Acrobat 是一款可以对PDF文件进行阅读加操作的软件，如合并拆分等。
（它不同于PDF阅读器，可以理解为PDF的编辑器吧）
你只需将零散的PDF文件全部选中后点击鼠标右键，选择合并PDF文件即可。
关于图像尺寸与显示在Adobe Acrobat 软件中有视图缩放与局部放大功能 可以
满足你的阅读要求。
希望能帮到你 ^_^
pdf文件被默认成windows图片查看器了，然后设成ADOBE READER后图标就是一个白文件里面一个reader图标
这种问题我今天刚刚解决了 一共2步.1.修复PDF文件图标关联(表现为PDF文件图标四周空白，中间为程序图标）HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.pdfHKEY_CURRENT_USER\Software\Classes\pdf_auto_file2.取消PDF缩略图删除pdf缩略图HKEY_CLASSES_ROOT\AcroExch.Document.7\Shellex 在BB2E617C-0920-11d1-9A0B-00C04FC2D6C1 删除子健然后cclearn,清理,注销.
