通信英語(yǔ)教程(ppt32)-電子電信-展示頁(yè)
2024-08-25 20:50本頁(yè)面
【正文】 veyed as a series of amplitude values, each value being represented as a sequence of 8 binary digits. 分詞短語(yǔ)出現(xiàn)在句尾，用逗號(hào)隔開(kāi)，表示伴隨情況說(shuō)明，非常常見(jiàn)。 介詞短語(yǔ) for doing something 作后置定語(yǔ)，表示目的，意思為用于 ? 的。 PCM is dependent on three separate operations, sampling, quantizing, and coding. ＊ Substances fall into three groups: conductors, semiconductors and insulators. ＊ The laser is able to amplify light ? one unique property. ＊ (9 4) can only be applied provided that the unsaturated gain coefficient exceeds the losses , a necessary requirement for oscillation. ＊ 這里列舉了同位語(yǔ)位于句尾，修飾最后一個(gè)名詞或整個(gè)句子的情況。UNIT 1 同位語(yǔ)跟在所修飾的名詞之后，可表示相同的事物或人，也可對(duì)該名詞進(jìn)行說(shuō)明。同位語(yǔ)與所修飾的名詞之間可以用各種標(biāo)點(diǎn)符號(hào)隔開(kāi)，這時(shí)同位語(yǔ)可以對(duì)標(biāo)點(diǎn)符號(hào)前的整個(gè)句子進(jìn)行說(shuō)明。還有其它的情況，課文中遇到時(shí)在講。 Schemes for performing these three functions have evolved, and shall describe the main ones. ＊ algorithms for decoding received signals ＊ 這里的 ones 是代詞 , 避免重復(fù)。 ＊ 這時(shí)分詞短語(yǔ)的邏輯主語(yǔ)經(jīng)常省略。具體情況以后結(jié)合課文講解。 ＊ of the most interest to ? , 對(duì) ? 最感興趣的 of interest = interesting of importance = important ＊ 名詞＋逗號(hào)＋同位語(yǔ) +逗號(hào) 進(jìn)行說(shuō)明 An American, Edison, invented the first small electric lamp. ＊ g, the acceleration of gravity at the earth’s surface, has the value 32 ft/sec2. ＊ 1. 正是數(shù)字傳輸為克服這種噪聲環(huán)境提供了一種有力的方法。 3. 最高頻率為 64kHz的信號(hào)來(lái)表示的，這是一個(gè)我們昨天所學(xué)的事實(shí)。 5. 編碼的問(wèn)題是一個(gè)極為重要的問(wèn)題。 7. 每采樣值 8位（碼）的重復(fù)速率比 4位的重復(fù)速率高。 漢譯英練習(xí)：（除第 8題外每題只用一個(gè)謂語(yǔ)動(dòng)詞） 1. 正是數(shù)字傳輸為克服這種噪聲環(huán)境提供了一種有力的方法。 It is for overing the noisy environment that digital transmission provides a powerful method. 3. 最高頻率為 64kHz的信號(hào)來(lái)表示的，這是一個(gè)我們昨天所學(xué)的事實(shí)。 The coder, a unit that converts amplitude values to a set of pulses, is very important to digital transmission. 5. 編碼的問(wèn)題是一個(gè)極為重要的問(wèn)題。 The term PCM is a munications one. 7. 每采樣值 8位（碼）的重復(fù)速率比 4位的重復(fù)速率高。 The speech signal is a analog one, and we can perform its digital transmission by sampling, quantizing and coding. UNIT 2 部分否定與完全否定：對(duì)于集合中的個(gè)體， 否定動(dòng)詞為部分否定，否定名詞為完全否定。 ? No instruments here are good. 這里的所有儀器都不是好的。 并非所有數(shù)據(jù)都要核對(duì)。 ?Neither of the transistors on the table are good. 桌子上兩個(gè)晶體管都不是好的。 ?Matters consist of molecules and molecules of atoms. ?The earth attracts the moon and the moon the earth. ?The meter is the standard for length, the gram for weights. ?Electrons are injected into th
試題試卷相關(guān)推薦
鄂ICP備17016276號(hào)-1