【正文】 s Day. More and more young Chinese people begin to celebrate this day in a very similar way as that in western countries. Fewer people than ever will gaze at the heavens on Saturday to pick out the two stars shining bright on either side of the Milky Way, that is, if people even know on which day Qixi falls. There are ready reminders dotted about, in the form of big ads saying Sales on Chinese Valentine39。 Festival. In this day, girls will throw a sewing needle into a bowl full of water on the night of Qixi as a test of embroidery skills. If the needle floats on top of the water instead of sinking, it proves the girl is a skilled embroiders. Single women also pray for finding a good husband in the future. And the newly married women pray to bee pregnant quickly. Tradition transformed The love story of Niulang and Zhinu, and the Qixi Festival have been handed down for generations. Yet these ancient traditions and customs are slowly dying out. Many modern Chinese, particularly youngsters, seem to know more about St Valentine39。s time for the wild fruits to ripe. The picturesque Arxan in Autumn is indeed a fairyland only exists in a dream that satisfies all your fantasies. If it rains heavily on Saturday night, some elderly Chinese will say it is because Zhinu, or the Weaving Maid, is 遼寧石油化工 大學本科生畢業(yè)論文 17 crying on the day she met her husband Niulang, or the Cowherd, on the Milky Way. Most Chinese remember being told this romantic tragedy when they were children on Qixi, or the Seventh Night Festival, which falls on the seventh day of the seventh lunar month, which is usually in early August. This year it falls on Saturday, August 2. Folklore Story As the story goes, once there was a cowherd, Niulang, who lived with his elder brother and sisterinlaw. But she disliked and abused him, and the boy was forced to leave home with only an old cow for pany. The cow, however, was a former god who had violated imperial rules and was sent to earth in bovine form. One day the cow led Niulang to a lake where fairies took a bath on earth. Among them was Zhinu, the most beautiful fairy and a skilled seamstress. The two fell in love at first sight and were soon married. They had a son and daughter and their happy life was held up as an example for hundreds of years in China. Yet in the eyes of the Jade Emperor, the Supreme Deity in Taoism, marriage between a mortal and fairy was strictly forbidden. He ordered the heaven troop to catch Zhinu back. Niulang grew desperate when he discovered Zhinu had been taken back to heaven. Driven by Niulang39。 ll wait in the line for one hour to get a ticket, and another two hours at the site, to only see a tiny bit of the place due to the crowds. Last year, 428 million tourists traveled in China over the weeklong holiday in October. Traveling during this period is a matter that needs thorough preparation. If you are short on time to plan the uping Golden Week it may not be a bad idea to avoid some of the most crowded places for now. There is always a place so fascinating that everyone yearns for. Arxan is a place like this. The beauty of Arxan is everlasting regardless of the changing of four seasons. Bestowed by nature, its spectacular seasonal landscape and mountains are just beyond word. Arxan is a crucial destination for the remended travelling route, China Inner Mongolia Arxan — Hailar — Manzhouli. It is also the joint of the four prairies across the SinoMongolian border, where people gravitate towards the exotic atmosphere mixed with Chinese, Russian, and Mongolia elements. As a historic site for the Yitian Battle, Arxan still embodies the spirit of Genghis Khan. Walking into Arxan, you will be amazed by a kaleidoscope of geous colors all the year round the Spring azaleas blooming red in the snow, the Summer sea wavering blue in the breeze, the Autumn leaves painted in yellow covering volcanic traces, and the Winter woods shining white on the vast alpine snowscape. Hinggan League Arxan city is situated in the far eastern area of Inner Mongolia Autonomous Region. Its full name Haren Arxan means hot holy water in the Mongolian language. Arxan is a tourism city in the northern frontier with a blend of large forest, grand prairies, vast snowfield, heaven lake cluster, thermium, as well as volcanic cluster. It is a rare and unique ecotourism base filled with healthy sunshine, clean air and unspoiled green. Nestled close to the country39。在此謹向徐老師表示衷心的感謝！ 此外，我還要向在我完成畢業(yè)論文過程中給予我很大幫助的許多老師表示深深的謝意。而徐老師認真、嚴謹、求實、一絲不茍的治學學風和兢兢業(yè)業(yè)、吃苦耐勞的工作作風以及對學術(shù)和工作的奉獻精神 ，所有這一切都給我留下了深刻的印象，并使我受益終生?？疾炝舜呋瘎┯昧?、醇酸物質(zhì)的量比、反應(yīng)時間及帶水劑等 因素對酯化率的影 遼寧石油化工 大學本科生畢業(yè)論文 13 遼寧石油化工 大學本科生畢業(yè)論文 14 參考文獻 [1] 鄧劍如，單婷婷，陳浪 ， 等 . 用混合二元酸制備混合酸二甲酯 [J]. 化工環(huán)保， 2021， 28（ 1） ：7476. [2] Shen Guoliang. Study on separation of mixture of binary a cid by extraction crytallization :Advance in environmental engineering and chemical engineering. Guang Zhou: South China University of Technology, 1997: 161165. [3] 趙運勝 ， 沈國良 ， 徐鐵軍 ， 等 . 由混合二元酸制取過氧化戊二酸 [J]. 精細化工 ， 1995， 24(2)：115117. [4] 沈曉潔 . 從混合二元酸中分離純化戊二酸 [J]. 廣西化工 ， 1998， 27(4)： 3435. [5] Valentine J. Reduction of Nitrogen Oxides Emissions from Diesel Engines[P]. US 5535708. 1996. [6] 唐炬 . 醇酮裝置廢酸水中副產(chǎn)物的回收利用探討 [J]. 合成纖維工業(yè) ， 1995， 18(1)： 4547. [7] 張丹陽，賈長英，張曉娟 ， 等 . 混合二元酸與甲醇酯化反應(yīng)動力學研究 [J]. 杭州化工， 2021，40（ 1）： 2225. 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