Learn basic assumptions based on increasingly serious dust pollution

2011-10-9 21:17:57 本站 浏览量:

Basic ideas:
    ① understood based on increasingly serious dust pollution, dust pollution, more and more attention, and we chalk dust diffusion and dust pollution and dust pollution hazards and governance discussions.
    ② dust pollution; chalk expansion
    To ③ scattered dust sources; Environmental Protection
    ④ analysis of how defense chalk dust hazards
    ⑤ now have large number of emission of many products, but the price is very expensive little flaws we want some breakthrough in this regard
    Steps during task stage target
    The first phase of online searching for a chalk
    The second phase of her mission to design survey program expert teachers know chalk dust harm to human body
    The third stage summary of the issues to make a report to make inventions and reaction measures