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Mechanical design is the application of science and technology to devise new or improved products for the purpose of satisfying human needs. It is a vast field of engineering technology which not only concerns itself with the original conception of the product in terms of its size, shape and cons..
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Introduction of MachiningHave a shape as a processing method, all machining process for the production of the most commonly used and most important method. Machining process is a process generated shape, in this process, Drivers device on the workpiece material to be in the form of chip removal. ..
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打包機(jī)是一種農(nóng)業(yè)機(jī)械,它用于壓縮已切割和傾斜的作物(如草、稻草或青貯飼料)成易于處理、運(yùn)輸和儲存的小包。常用的打包機(jī)有幾個不同類型,分別生產(chǎn)不同類型的包-矩形的、圓柱形的,大小各不相同,用麻繩、網(wǎng)或金屬絲纏繞起來。工業(yè)打包機(jī)還可以用在材料回收設(shè)備上,主要用于包裝需要運(yùn)輸?shù)慕饘、塑料或紙。圓形打包機(jī)在工..
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INTRODUCTION It is absolutely essential that a design engineer know how and why parts fail so that reliable machines that require minimum maintenance can be designed.Sometimes a failure can be serious,such as when a tire blows out on an automobile traveling at high speed.On the other hand,..
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光刻投影鏡頭多閉環(huán)溫度控制系統(tǒng)-------外文翻譯
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AbstractIn the field of PLC, the standardization process on international level is progressing very slowly. The EMC Laboratory of the North China Electric Power University has received the task to develop a measurement method for the field radiated by PLC installations and a standard to be used i..
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摘要在當(dāng)今的視頻傳輸與廣播網(wǎng)絡(luò)中,版權(quán)的保護(hù)問題已經(jīng)變得越來越緊迫。這是因為視頻拷貝的出現(xiàn)并沒有降低原始視頻文件的品質(zhì)。一種保護(hù)版權(quán)的方法是在視頻序列中嵌入一段數(shù)字密碼,這段數(shù)字密碼的學(xué)術(shù)名稱叫做水印。因此,這篇課題的目的就是研究低復(fù)雜度的壓縮域H.264視頻水印算法。視頻編碼標(biāo)準(zhǔn)決定了H.264/MPEG-4 A..
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can god. The poet love the arch bridge in China compared to the rainbow bridge is "lying, said," FeiHong rainbow "" the water arch bridge described as" wave "changhong lie.In the world QiaoLiangShi stone appear on early. This bridge is not only form graceful, but also firm structure, can decades ..
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As the world energy crisis, and the war and the energy consumption of oil -- and are full of energy, in one day, someday it will disappear without a trace. Oil is not in resources. So in oil consumption must be clean before finding a replacement. With the development of science and technology the..