environmental conversion arrangement；环境转变布置 environmental dust condition；多尘环境条件 environmental protection agency；环保机构 ..
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Water-proof, dust prevention and anti-corrosion, being able to work outdoor under bad environmental condition.
采用可靠的三防技术，防水、防尘、防腐蚀性好，可在恶劣的生产环境中可靠工作。
The smaller the dust grain size, the higher the vertical displacement of dust grain due to electrostatic levitation on the same environmental condition.
随着粒径的减少，月尘颗粒的最大浮扬高度不断增加。
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