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The Factors Related to Density of PM 2.5 in Ambient Air: A Study Based on Statistics Zhuoqun Cao   Introduction   PM 2.5 is defined as the fine particles in ambient air with the diameter equal to or less than 2.5 mm. It can suspend in the air for a long time and has significant […]

                                                                       Plagiarism Research Paper In western concepts, “intellectual property” is defined as “creations of the mind, such as inventions; literary and […]