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機(jī)械設(shè)計(jì)制造及其自動化專業(yè)畢業(yè)論文范文-資料下載頁

2025-05-29 23:54本頁面
  

【正文】 設(shè)備[M].北京:科學(xué)出版社,2006:105~108.[10]徐灝主編,機(jī)械設(shè)計(jì)手冊—2版,北京—機(jī)械工業(yè)出版社[M].2000.6.[11]濮良貴.紀(jì)名剛主編,機(jī)械設(shè)計(jì)—7版[M].武漢:武漢理工大學(xué)出版社,2004:231~241.[12]蔡春源.機(jī)械設(shè)計(jì)手冊[M].北京:機(jī)械工業(yè)出版社,2003:38121~132.[13]朱龍根.簡明機(jī)械設(shè)計(jì)手冊[M].北京:機(jī)械工業(yè)出版社,2001:515~520.[14]張杰,王振華.實(shí)用機(jī)械設(shè)計(jì)手冊.第二版.北京:機(jī)械工業(yè)出版社,1994:220~222.致 謝本篇論文雖然凝聚著自己的汗水,但卻不是個人智慧的產(chǎn)品,沒有導(dǎo)師的指引和贈予,沒有父母和朋友的幫助和支持,我在大學(xué)的學(xué)術(shù)成長肯定會大打折扣。當(dāng)我打完畢業(yè)論文的最后一個字符,涌上心頭的不是長途跋涉后抵達(dá)終點(diǎn)的欣喜,而是源自心底的誠摯謝意。我首先要感謝我的導(dǎo)師劉天祥,對我的構(gòu)思以及論文的內(nèi)容不厭其煩的進(jìn)行多次指導(dǎo)和悉心指點(diǎn),使我在完成論文的同時也深受啟發(fā)和教育。在本次畢業(yè)設(shè)計(jì)過程中,既對所學(xué)過的知識有一個綜合的檢驗(yàn),又學(xué)到了其他相關(guān)專業(yè)的知識,對以后的工作實(shí)踐有很大的幫助。通過本次設(shè)計(jì)說明書的撰寫,端正了我嚴(yán)謹(jǐn)?shù)淖鍪聭B(tài)度,同時培養(yǎng)了我提高解決問題的能力和做事情端正的態(tài)度。再次由衷感謝答辯組的各位老師對學(xué)生的指導(dǎo)和教誨,我也在努力的積蓄著力量,盡自己的微薄之力回報(bào)母校的培育之情,爭取使自己的人生對社會產(chǎn)生些許積極的價值! 附錄馬鈴薯栽培分布較廣,世界上共有148個國家栽培,主要分布在歐洲和亞洲。20世紀(jì)60年代以來,馬鈴薯栽培面積比較穩(wěn)定,發(fā)達(dá)國家逐漸減少,發(fā)展中國家有所增加,%的速度遞增。蘇聯(lián)解體后,中國成為馬鈴薯栽培面積最大的國家。世界上馬鈴薯栽培面積較大的其他國家是俄羅斯、波蘭、美國等。馬鈴薯與甘薯栽培分布差別最大的特點(diǎn)是甘薯多栽培在發(fā)展中國家,而馬鈴薯多栽培在發(fā)達(dá)國家較多。發(fā)達(dá)國家馬鈴薯單產(chǎn)水平較高,如荷蘭每公頃馬鈴薯產(chǎn)量已達(dá)43噸,美國為38噸,德國為35噸;~3倍。中國馬鈴薯栽培面積變化呈V字型,80年代前由于糧食壓力,面積逐步上升,年栽培面積達(dá)450萬公頃;此后,糧食問題解決,生產(chǎn)面積回落至1983年的260萬公頃,80年代后期由于人民生活改善,加工技術(shù)提高,西餐食品增加,馬鈴薯栽培面積逐漸回升,近年來穩(wěn)定在400萬公頃左右。但馬鈴薯單產(chǎn)提高幅度不快,低于世界平均產(chǎn)量15%左右。在世界上工業(yè)發(fā)達(dá)國家,馬鈴薯深加工量一般都占總產(chǎn)量的50%~80%,1980年,美國馬鈴薯深加工量占鮮薯總產(chǎn)量的76%。1984年,荷蘭馬鈴薯加工量占總產(chǎn)量的55%。目前,美國是世界上最大的馬鈴薯生產(chǎn)國和出口國,馬鈴薯生產(chǎn)企業(yè)有300多家,其子公司遍及世界十幾個國家。美國的馬鈴薯不僅暢銷國內(nèi),且大量出口,干制食品和方便食品占居了世界的絕大部分市場。近20年來,繼美國之后,德、法、英、荷蘭、瑞士及日本等國家,也在致力于發(fā)展馬鈴薯食品深加工業(yè),從而使世界馬鈴薯食品加工業(yè)進(jìn)入蓬勃發(fā)展階段。Potato planting a wide distribution, the world 148 countries cultivation, distributed mainly in Europe and Asia. Since the 1960 s, potato planting area is stable and gradually reduce the developed countries, developing countries have increased, developing countries in recent years, increasing by % per year. After the collapse of the Soviet union, China has bee the largest country in area of potato cultivation. The world of the potato planting area is larger in other countries is Russia, Poland and the United States. Potatoes and sweet potato cultivation distribution difference the biggest characteristic is more sweet potato cultivation in developing countries, and more than the potato cultivation in developed countries more. Developed countries yield high levels of potatoes, such as the Netherlands potato production per hectare has 43 tons, the United States is 38 tons, Germany of 35 tons。 Developing countries is equivalent to ~ 3 times. China39。s potato cultivation area changing a letter V, before the 80 s because food pressure, the area to rise gradually, area of million hectares in cultivation。 Since then, the grain problem solving, production area fall to 1983 hectares, 80 s because of people39。s living standard, the processing technology improve, western food increases, potato planting area of pick up gradually, in recent years stabilized at about 4 million ha. But the potato yield increase was unhappy, in 1998 the average yield of t/ha, lower than the world average yield 15%. In the world industrial developed country, potato deep manufactured generally 50% ~ 80% of total output, in 1980, the United States potato chips of deep manufactured fresh 76% of production. In 1984, the Netherlands potatoes manufactured accounts 55% of the total outputs. At present, the United States is the world39。s largest producer and exporter of potatoes, potato production enterprise, more than 300 are, its ten countries all over the world. American potatoes not only bestselling domestic, and massive exportation, dehydrated food and the convenient food for most of the world dominated the market. Over the past 20 years, after the United States, Germany, France, Britain, the Netherlands, Switzerland, Japan and other countries, also in mitted to the development of potato food deep processing, thus make the world potato food processing industry into the vigorous development stage
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