【正文】 s Liaoning province, decades ago. The solider gave the old man a handmade saddle when they bid farewell. The story inspired Nasun to write Carved Saddle, a song that later became one of his most popular numbers. Now, every year, Nasun recruits young singers and dancers for the troupe. The troupe has also designed a new repertoire, which is mostly based on the daily lives of Mongolian people, especially the lives of nomadic families, and has bined contemporary musical elements with folk songs of the region. Haimu, a 25yearold khoomei (a local variant of overtone singing) singer, joined the troupe three years ago. Along with a sixmember band, he performs fast songs and soft ones that he writes－ all while playing the horsehead fiddle.Although I learned the piano since childhood and grew up listening to various kinds of music, to me, the folk music of Inner Mongolia is the root, he says. Performing in remote villages is pleasant. I feel at home on the boundless grasslands, and the warm people there make me feel fulfilled. The first round of spring auction season in Beijing ended last week, but it failed to create much spring in the art market. Although two pieces of Chinese painting fetched more than 100 million yuan, the decline in trading volume and sa le rate showed a downturn this year. In the ―Grand View: Chinese Painting Highlight‖ session at China Guardian 2021 spring auctions, Pan Tianshou’s representative work Eagle, Rock and Flora hit a record auction price of 279 million yuan, while Li Keran’s masterwork Jinggang Mountain fetched million yuan, an unexpected high in recent years. However, the trading volume fells to billion yuan from billion yuan in the same period the year before. The Huangchen 2021 Spring Auctions, which recorded million yuan in total sales, experienced the same. The section number went down to 5 from 12 pared to last year. According to expert Shao Jianwu, the art market did not attract much excitement this year due to the booming stock market and the persistent problems of fery and fake deals. The two pieces of Chinese painting notched up high price this spring due to their own value not due to a revival in the market. The successful transaction of two works with a hammer price of more than 100 million yuan once again confirms that valuable and rare works of high quality always earn the longlasting high price. Chinese painting and calligraphy is still the pillar of the market. However, the overall sales rate has dropped slightly, which reflects the demand for the ordinary auction goods has weakened,‖ said the president of China Guardian’s Hu Yanyan. Besides, the entry of new buyers also makes certain changes to the direction of purchasing. In a word, the overall market trend is very unpredictable. Although China Guardian 2021 Spring Auctions has achieved remarkable results, it does not mean that the market has walked out of the predicament. We still have to wait for the big economic boom to invigorate the art market.‖ Even so, the hot pursuit of some special items appeared this spring. A special session of China Guardian Spring Auctions titled ―Fine Gilt—Bronze Buddhist Images‖ achieved a great deal with total sales volume of million yuan and 92 percent sale 。s Poly Theater. Their show, titled Ulan Muqir on the Grassland, depicted the history and development of the art troupe. Being from the region allowed me to embrace the culture of Inner Mongolia and being a member of the troupe showed me where I belonged, Nasun, the art troupe39。s performers of the troupe still tour the region39。t have a formal stage. The audience just sat on the grass. Usually, the performances became a big party with local people joining in. For him, the rewarding part about touring isn39。80s. We sat on the back of pickup trucks for hours. The sky was blue, and we couldn39。s Shaanxi province pass through a stop on the ancient Silk Road, Gansu39。另外，要感謝在大學(xué)期間所有傳授我知識的老師，是你們的悉心教導(dǎo)使我有了良好的專業(yè)課知識，這也是論文得以完成的基礎(chǔ)。 參考文獻 26 參考文獻 1］ . 余志生 .汽車理論 [M]，機械工業(yè)出版社， 2021. ［ 2］ . 王望予 .汽車設(shè)計 [M]，機械工業(yè)出版社， 2021. ［ 3］ . 陳家瑞 .汽車構(gòu)造 [M]，機械工業(yè)出版社， 2021. ［ 4］ . 李杰敏 .汽車拖拉機試驗學(xué) [M]，機械工業(yè)出版社， 2021. ［ 5］ . 王寶璽 .汽車拖拉機制造工藝學(xué) [M]，機械工業(yè)出版社， 2021. ［ 6］．黃天澤等 .汽車車身結(jié)構(gòu)與設(shè)計 [M]，機械工業(yè)出版社， 2021. ［ 7］ . 葛安林 .車輛自動變速理論與設(shè)計 [M]，機械工業(yè)出版社， 2021. ［ 8］ . 金國棟 .汽車概論 [M], 機械工業(yè)出版社， 2021. ［ 9］ . 龔培康 .汽車拖拉機有限元法基礎(chǔ) [M]，機械工業(yè)出版社， 2021. ［ 10］ .林慕義 .工程車輛全動力制動系統(tǒng) [M]，冶金工業(yè)出版社， 2021. ［ 11］ . 齊志鵬 .汽車制動系統(tǒng)的結(jié)構(gòu)原理與檢修 [M]，人民郵電出版社， 2021. ［ 12］ . 紀常偉 .馮能蓮 .汽車構(gòu)造 [M]，機械工業(yè)出版社， 2021. ［ 13］ . 劉惟信 .汽車制動系的結(jié)構(gòu)分析與設(shè)計計算 [M]，清華大學(xué)出版社， 2021. ［ 14］ . 王正鍵 .現(xiàn)代汽車構(gòu)造 [M]， 華南理工大學(xué)出版社 ， 2021. ［ 15］ . 肖永清 .汽車制動系統(tǒng)的使用與維修 [M]，中國電力出版社， 2021. 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Differential equations with discontinuous righthand sides. 南京工業(yè)大學(xué)學(xué)士論文 27 Dordrecht: Kluwer Academic Publishers。 在整個畢業(yè)論文設(shè)計的過程中我學(xué)到了做任何事情所要有的態(tài)度和心態(tài)，首先我明白了做學(xué)問要一絲不茍，對于出現(xiàn)的任何問題和偏差都不要輕視，要通過正確的途徑去解決，在做事情的過程中要有耐心 和毅力，不要一遇到困難就打退堂鼓，只要堅持下去就可以找到思路去解決問題的。開題報告完成之后隨即進入緊張而有序的 CAD 制圖。通過一段時間的深入學(xué)習(xí)，搜集了一大堆與畢業(yè)設(shè)計題目相關(guān)的資料，在蘇老師的指導(dǎo)下，摒棄了一些無關(guān)緊要的內(nèi)容，保留了有參考價值的資料作為備用。 我最初的工作是搜集與汽車制動器有關(guān)的資料。單個車輪的盤式制動器的比摩擦力： 101 11 ????? ArMf u （ ） 式中： 1f—