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论文:论郑和下西洋

226 2023-12-19 11:19 admin

一、论文:论郑和下西洋

你好,我有相关的论文资料,需要的话请加我QQ啊,谢谢

二、我以第二作者身份发表了一篇文章,我的毕业论文里面直接把这篇文章复制进去算抄袭吗?

文中标上引用,再将自己的小论文放在文献列表,这样不算抄袭,,望采纳,,

三、谁能帮我写一个acknowledgement。毕业论文的

On the completion of my thesis, I should like to express my deepest gratitude to all those whose kindness and advice have made this work possible. I am greatly indebted to my advisor He Jiaju who gave me valuable instructions and has improved me in language. His effective advice, shrewd comments have kept the thesis in the right direction. I would like to thank my partner Freda and Effie for their friendship and constructive suggestions, they constantly encouraged me when I felt frustrated with this dissertation. 里边的名字你自己改一下了

四、我想以“废润滑油再生工艺的研究”为毕业论文题目哪位有相关资料推荐点啊!谢谢了

秀军 ,2 郭丽梅1# 蒋明康1

(1.天津科技大学材料科学与化学工程学院,天津 300222;

2.大庆油田化工有限公司精细化工厂,黑龙江 大庆 163411)

摘要 采用硫酸精制-碱中和-活性白土吸附-过滤的工艺流程处理废齿轮润滑油。酸洗温度40 ℃,98%浓硫酸用量为废油量的6%(质量分数);碱中和温度80 ℃,中和剂为10%氢氧化钠;吸附条件:活性白土用量为15%(质量分数),温度150 ℃,时间1 h;再生润滑油粘度40 ℃时为128 Mpa•s,80 ℃为19.2 MPa•s,凝点为-33 ℃。同时用废碱处理酸渣,采用阳离子絮凝剂处理废水。

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