众文网1.毕业论文外文翻译(关于玫瑰花的芳香及含量的,和玫瑰生理挂钩也行
【目的】研究玫瑰花发育过程中芳香成分及其含量的变化。
【方法】采用顶空固相微萃取（HS-SPME）和气相色谱-质谱联用（GC-MS）技术分析‘唐紫’玫瑰花发育过程中芳香成分及其含量的变化。【结果】花蕾期共检出芳香成分53种，萜烯类化合物是主要香气成分，含量较多的芳香成分有γ-依兰油烯、α-雪松烯、α-蒎烯、反式-α-香柠檬烯、顺式-乙酸-3-己烯酯、长叶马鞭草烯酮；初开期共检测出65种芳香成分，醇类、酯类和萜烯类化合物是主要香气成分，含量较多的有β-香茅醇、乙酸香茅酯、苯乙醇、香叶醇、乙酸正己酯、橙花醇、乙酸苯乙酯、顺式-乙酸-3-己烯酯；半开期共检测出芳香成分62种，醇类、酯类和萜烯类化合物是主要香气成分，含量较多的有β-香茅醇、香叶醇、苯乙醇、乙酸香茅酯、橙花醇、乙酸正己酯、乙酸苯乙酯和α-月桂烯；盛开期共检测出芳香成分65种，主要为醇类、酯类和萜烯类化合物，含量较多的有β-香茅醇、乙酸香茅酯、苯乙醇、乙酸香叶酯、香叶醇、乙酸苯乙酯、橙花醇、乙酸正己酯和α-月桂烯；盛开末期共检测出芳香成分58种，主要为醇类、酯类和萜烯类化合物，含量较多的有β-香茅醇、苯乙醇、乙酸苯乙酯、乙酸香茅酯、α-月桂烯、α-蒎烯、柠檬烯和乙酸香叶酯；伴随花的不断发育，醇类化合物含量迅速增加，半开期含量最高；酯类化合物呈先升高后降低的趋势，盛开期含量最高；萜烯类化合物在花蕾期含量最高，初开期迅速下降，至盛开末期又有所上升；醛类化合物的含量呈先迅速升高后迅速降低的趋势，盛开期含量最高。
【结论】玫瑰花发育的不同时期，芳香成分及含量差异明显。鲜花的主要香气成分在初开期基本形成，大部分芳香成分在半开期至盛开期含量最高。
因此，生产中提取玫瑰精油时，应选择开放程度在半开期至盛开期的鲜花进行采摘。【Objective】 fragrant roses during development of the changes in composition and content. 【Methods】 headspace solid-phase microextraction (HS-SPME) and gas chromatography - mass spectrometry (GC-MS) analysis' Tang Purple 'roses aromatic components during development and its content changes. 【Results】 flower period were found 53 kinds of aromatic components, terpenes are major aroma components, the content of aromatic components are more γ-ylang oil ene， α-cedrene， α-pinene, trans--- Shannon α-limonene, cis-- acetic acid -3 - hexene esters, long-leaf verbena ketene; early opening period to detect 65 kinds of aromatic ingredients, alcohols, esters and terpenes is the main aroma components , there is more content in β-Citronellol, lemongrass acid ester, phenylethyl alcohol, geraniol, hexyl acetate ester, orange blossom alcohol, acetic acid phenethyl ester, cis-- acetic acid -3 - hexene ester; semi-open period is detected in 62 kinds of aromatic ingredients, alcohols, esters and terpenes is the main aroma components, there is more content in β-Citronellol, geraniol, phenylethyl alcohol, acetic acid Shannon Mao ester, orange blossom alcohol, acetic acid hexyl ester, acetic acid phenethyl ester and α-Myrcene; bloom period is to detect 65 kinds of aromatic constituents, mainly alcohols, esters and terpenes, more content there β-Citronellol, lemongrass acid ester, phenylethyl alcohol, geraniol acetate esters, geraniol, acetic acid phenethyl ester, orange blossom alcohol, acetic acid hexyl ester and α-Myrcene; bloom were detected late 58 kinds of aromatic ingredients, mainly alcohols, esters and terpenes, higher content of β-Citronellol, benzene, ethanol, acetic acid phenethyl ester, acetic acid ester lemongrass， α-myrcene， α-pinene, limonene and geranyl acetate ester; accompanied by the continuous development of flowers, the rapid increase in content of alcohols, the highest semi-open period; esters was reduced after the first increase in the trend, the highest in full bloom period; terpenoid vinyl compounds in the highest bud period, the rapid decline in the early opening period to the end of another rise in full bloom; the content of aldehydes was increased rapidly after the first rapid decrease in the trend, the highest in full bloom period. 【Conclusion】 roses at different stages of development, composition and content of aromatic differences. The main aroma components of flowers open in the early period of the basic form, the majority of aromatic components in the semi-open view to the highest in full bloom period. Therefore, the production of rose oil extraction should choose the degree of openness to the semi-open view of the flowers in full bloom period for picking.这个很难搞得 不给分就不过偶面子啦吧。
2.该怎么规划自己的大学生涯
兄弟既然你进入了大学那么恭喜你——自由了！
在大学拟必须要做的事：
谈恋爱，如果有喜欢的一定要说出来里了大学就没机会了，大学的恋爱可能还会讲感情，走上社会后的恋爱就要讲实力了！
尽可能多的加入社团，别怕没时间就怕太闲。大学拟需要学的东西不多，有用的东西更少。加入社团可以跟很多人接触搞好关系对你以后的人脉关系网很重要。
策划一起事件给母校留点纪念，别怕动静大，就怕还没离校学校已经没人记得你了。
一定要去实习或者就是去打工先提前接触下社会的残酷，别整天闷在学校幻想明天的美好。等到毕业才梦醒。早点打预防针早点有准备。
其他的什么的基本上你进了学校就会明白在这我就不多说了