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畢業(yè)論文-太陽能電池片制絨制備工藝(參考版)

2025-01-15 13:49本頁面
  

【正文】 he wondered how in the world he came to belong there. Indeed his penning and publishing this essay caused his exmunication from high society and also caused him a lot of legal trouble. The legal trouble came as a result of the fact that he was speaking out against the government. I like to reference such texts from time to time as an example both of the fact that history does repeat its。ve not yet read it, I strongly encourage you to do so. In this essay, the venerable Emerson talks about eschewing the trappings of society and finding one39。s to e and recapping the key points. This device, not used in the original, is culturally understandable but artistically mediocre. What puzzles me is the two new songs for the opening and end credits. They were written in English, but sung by Chinese with an unfortable accent. They were obviously designed to appeal to an Englishspeaking base, but do not jibe with the Chinese dialogue. Speaking of the dialogue, the English translation, picked apart by some Chinese, is too literal for my taste. I can imagine a typical American hit by a flurry of royal ranks, addresses and greetings, even multiple names and titles for the same person. The first half hour must be a swamp to wade through, very much like my experience of getting through a Tolstoy tome with its endless inflections of names transliterated into lengthy Chinese. I see the choice of verbatim translation as an effort for conveying exotica. It is fairly petent, with no error that I could detect, but fails to rise above words or capture the essence of the language. A cultural product usually crosses over to a foreign territory first by an emphasis on the monalities. But whether inside or outside China, the temptation to sell it for the differences is just too great. Sure, the sumptuous sets and costumes are a big attraction, but the narrative technique has bee- how shall I put it?- a bit anglicized, which is necessary for cultural export. Judging by the responses, this legend, which, contrary to the claim of the English trailer, is totally fictitious, has departed from China but not yet landed on American shores. I am a big fan of Ralph Waldo Emerson39。s cultural foray overseas, has been widely panned by its home audience. Retitled Empresses in the Palace, the American version has been shortened from its original 76 episodes at 45 minutes each, to six 90minute episodes. The quick pacing threw off many native viewers, who are accustomed to a more leisurely daytimesoapstyle narrative rhythm. (Chinese TV stations would run two or three episodes every day.) I did not finish the fulllength version and found the truncated one not difficult to follow. What39。s president, who is also a renowned tenor, tells China Daily. During a tour in 1985, he went to a village and met an elderly local man, who told him a story about his friendship with a solider from Shenyang, capital of Northeast China39。s villages and entertain nomadic families, but their fame has spread around the world. On May 16 and 17, nearly 100 singers and dancers from the troupe performed at Beijing39。t just about sharing art with nomadic families but also about gaining inspiration for the music and dance. Ulan Muqir literally translates as red burgeon, and today39。t help but sing the folk songs, Nasun says. The vastness of Inner Mongolia and the lack of entertainment options for people living there, made their lives lonely. The nomadic people were very excited about our visits, Nasun recalls. We didn39。s Zhangye city during their journey to Kazakhstan, May 5, 2022. The caravan, consisting of more than 100 camels, three horsedrawn carriages and four support vehicles, started the trip from Jingyang county in Shaanxi on Sept 19, 2022. It will pass through Gansu province and Xinjiang Uygur autonomous region, and finally arrive in Almaty, formerly known as AlmaAta, the largest city in Kazakhstan, and Dungan in Zhambyl province. The trip will cover about 15,000 kilometers and take the caravan more than one year to plete. The caravan is expected to return to Jingyang in March 2022. Then they will e back, carrying specialty products from Kazakhstan A small art troupe founded six decades ago has grown into a household name in the Inner Mongolia autonomous region. In the 1950s, Ulan Muqir Art Troupe was created by nine young musicians, who toured remote villages on horses and performed traditional Mongolian music and dances for nomadic families. The 54yearold was born in Tongliao, in eastern Inner Mongolia and joined the troupe in says there are 74 branch troupes across Inner Mongolia and actors give around 100 shows every year to local nomadic people. I can still recall the days when I toured with the troupe in the early 39。 [5] 羅玉峰、廖衛(wèi)兵、劉儀柯,太陽電池硅材料生產(chǎn)技術(shù) [M],江西高校出版 ,2022 [6] 著 [美 ],趙毅強,姚素英,解曉東等譯 . 半導體物理與器件(第三版)[M].北京:電子工業(yè)出版社, 2022 [7] 劉新福,杜占平,李為名.半導體測試技術(shù)原理與應用 [M].北京:冶金業(yè)出版社, 2022 為你提 供優(yōu)秀的畢業(yè)論文參考資料,請您刪除以下內(nèi)容, O(∩ _∩ )O 謝謝!?。?A large group of tea merchants on camels and horses from Northwest China39。 [3] 朱和國,王恒志 .材料科學研究與測試方法 [M]. 南京:東南大學出版社, 2022 [4] 馬丁 最后向多年默默支持我和關(guān)心我,不斷給我信心、支持我上進,使我順利完成大學學業(yè)的家人 , 特別 是 我的父母 , 獻上我最真摯的謝意和最美好的祝福。我還要向我的同學們表示感謝,感謝 光伏發(fā)電應用及其技術(shù) 1111 全班所有 同學對我 的 生活和學業(yè)上的關(guān)心和幫助。導師不但在學習上給予我耐心細致的指導,在生活中也給了我關(guān)懷,這份師恩我將終身難忘。從論文的立題到論文的撰寫整個過程無不浸透著老師的心血。在論文編寫過 程中,得到了很多關(guān)心我的人的無私幫助,正是在這些幫助下我才得以完成論文??梢哉f是起著至關(guān)重要,必不可少的步驟之一。 簡要說明從原料一直到制成太陽電池的過程,著重描述太陽電池生產(chǎn)工藝中的清洗制絨工藝的詳細步驟,分析在實際生產(chǎn)上所遇到的簡單問題,并運用所學對某些問題提出相關(guān)改進技術(shù)。 HCl 的作用:中和殘留在硅片表面殘余堿液; 去除在硅片切割時表面引入的金屬雜質(zhì)。常見不良為絨面大小不合適,制絨后,硅片反射率高等。 多晶制絨可選方法很多,但綜合成本及最終效果,當前產(chǎn)業(yè)所用多晶制絨工藝均為HNO3, HF, DI Water 混合液體系制絨。硅片的表面沾污,缺陷等對絨面形成有重要影響。 3. 用大量去離子水溢流清洗,以排除溶液中的金屬離子 由于金屬離子對于電池性能有著很大的影響,如圖 413,所以需要去除硅片表面的金屬離子,在化學清洗過程中一般使用 HF+NH4F 和 HCL 去除表面氧化層和硅片表面金屬離子,反應方程式 ? ?2 2 6 2Si O 6 H F H Si F 2 H O? ? ? HCl 去除硅片表面金屬雜質(zhì)鹽酸具有酸和絡合劑的雙重作用,氯離子能與 Pt 2+、 Au 3+、Ag +、 Cu +、 Cd 2+、 Hg 2+等金屬離子形成可溶于水的絡合物。 1
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