【正文】 2021 [5] 胡紅英 ， 于金普 ， 包耳 . 《大連民族學院學報》 . 2021 [6] 李玉坷 ， 楊寶柱 . 《中國科技博覽》 . 2021 [7] 胡越銘 ， 高德文 ， 張瑞 ， 張 欣，高 軒 . 《北方工業(yè)大學學報》 . 2021 [8] 哈爾濱工業(yè)大學理論力學教研室 .理論力學 .7 版：高等教育出版社 . 2021 [9] 機械設計手冊編委會 . 機械設計手冊 [M]. 北京： 機械工業(yè)出版社 . 2021 [10] 郭衛(wèi)東主編 .機械原理 .北京：科學出版社 . 2021 [11] 李世文 ， 趙海龍 ， 何欣 ，趙鵬飛 .電子制作 . 2021 [12] 濮良貴 ,紀名剛 .機械設計 .8版：北京高等教育出版社 . 2021 [13] 李天培 .工程材料與熱處理 [M]. 哈爾濱：哈爾濱工程大學出版社 . 2021 [14] 王伯平主編 .互換性與測量技術基礎 .3版：機械工業(yè)出版社 . 2021 附錄 32 附錄 附錄 1：無碳越障小車裝配圖（圖號： WTYZXC0101） 附錄 2：前輪叉架零件圖 (圖號： WTYZXC0102) 附錄 33 附錄 3：后輪軸零件圖 (圖號： WTYZXC0103) 附錄 4：凸輪軸零件圖 (圖號： WTYZXC0104) 附錄 34 附錄 5：無碳越障小車三維仿真模型 附錄 6：無 碳越障小車實體模型 致謝 35 致謝 通過本次畢業(yè)設計，我學到了更多關于產(chǎn)品調(diào)研、設計、制作以及到調(diào)試過程的知識。這是一個相當繁瑣復雜的過程，需要相當?shù)哪托暮鸵懔?。只有通過不斷設計，不斷改進，才能得到科學合理、實際可行的設計方案。小車的制作花費了不少精力，為了制造有些零件，我又學習了幾個新機器的使用，以前學過的操作過程也熟悉了許多。我發(fā)現(xiàn)了只有實踐才能發(fā)現(xiàn)問題，解決問題，理論與實踐總是有很多差距。其次，本次畢業(yè)設計對于提高個人動手能力、綜合性思維能力也有莫大幫助，對于 今后的學習 、 工作 能力的提高都有很大的幫 助， 所學到的 綜合創(chuàng)新實踐和科學實驗方法 是 這次畢業(yè)設計 最大的收獲和財富， 將 終身受益。 時間如白駒過隙，四年的大學本科學習生活就要過去了，在論文即將完成之際，我要衷心的感謝所有指導、關心和幫助我的老師和同學。因為有你們的幫助，這次畢業(yè)設計才能順利完成。首先感謝張建平老師在整個畢業(yè)設計過程中的悉心指導，在畢業(yè)設計完成的過程中，張老師給了我很多的指導和啟發(fā)。 致謝 36 與此同時，我還要感謝 C 區(qū)工程實訓中心的楊濤老師和金國良老師，在我制作實物的過程中為我提供的幫助。這次畢業(yè)設計用到了我在大學四年里學到的很多知識，感謝大學四年來 為我傳道授業(yè)的老師們。 致謝 37 您好，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 national survey was recently launched to evaluate the eye health of Chinese children June 6, China39。s annual National Day for Eye Care, the China Youth Development ServiceCenter and Zhejiang Medicine, a leading listed Chinese pharmaceutical pany, jointlyannounced the kickoff of the surve about one month, a questionnaire piled by top eye care medical experts in China willbe distributed through multiple online partners, including , as well asthrough offline survey events held in universities, middle schools and primary schools acrossthe report will be released based on the survey statistics and analysis, and most importantly,guidelines for parents and youth on how to care for the eyes and prevent myopia — agrowing problem in China39。s digitized society, will also be attached on the report.Myopia is not only a disease that makes people see things blurrily, but also leads to severeplications, such as glaua (increased pressure within the eyeball), and can causeblindness, said Zhou Yuehua, an established eye care specialist with Beijing TongrenHospital.It is very important for parents and children to know about the risk and care for their eyes.There are about 450 million myopia patients in China. Among Chinese myopia patients,30million are severe patients, according to ZhouThe prevalence of myopia among high school and college students is more than 70 percent,and the situation is continuously worsening, he Zhu, director with the China Youth Development Service Center, said long hours ofstudy, lack of exercise, especially outdoor activities, and attachment to electronic screen aresome of the top reasons behind the widespread myopia problems, and the increase ofyounger patients, although China has made great progress in improving the hardwarefacilities and lighting conditions in said he hopes the survey will alert people on the threatening situation, and also helpmedical experts to better guideline parents and children39。s behaviors to care for eyes, basedon the timely and factual statistics the survey series of followup events will also be held in six cities, including Jinan in Shandongprovince, and Changsha in Hunan province, to educate people on how to care for eyes afterthe survey started. More and more Chinese are jogging to get and stay fit. Most joggers will run alone, but some will jog with friends or even coaches. The Beijing Olympic Forest Park is one of the most popul ar spots. It is packed with runners in the afternoon, usually after work, and at weekends. Jogging after a whole day39。s work can be a way to unwind. It is true for He Wenjun, whose workplace is right near the forest park. She discovered her athletic aptitude at the age of seven, when she began playing tennis. Then she turned to jogging, and she has persevered with it for 10 years. I e to jog almost every day after work, whenever I have time. I think jogging is good for my health. And for me, a girl, it helps me to achieve to eternal goal, to keep slim, He said. He says she prefers jogging alone, so she can focus better. She loves jogging, even during Beijing39。s smoggy days. If the smog is severe, I39。ll hold off jogging for a while. But if I really want to get away from work, I39。ll wear a mask, or just ignore the smog and go on jogging, she said. For those who are not so athletic, jogging also has its attractions. Wu Houbin started roughly two years ago, when he was severely obese. Within two months, his weight dropped from 82 kilograms to 64 kilograms. The success helped him recover health, and he has made friends. Jogging does not require speed, but stamina. If you want to stick to the game, you need to take it as a mission, a habit, and then eventually a hobby, Wu said. But persevering with jogging is not always easy. Jogging is beneficial for heartlung function, and the skeletal system, but doctors say improper technique damages the joints, especially the knees and ankles. Excessive jogging wears down the body, and harms one39。s health. Poor technique harms the muscles and skeleton, and can cause secondary injures. And, jogging in a bad environment can cause c