• 1. Area Concentration: 集中广告推销地区
• 2. per unit area concentration: 单位面积浓度
• 3. time area concentration diagram: 时间

更多释义

• 1.Time area concentration diagram lengthways, is more hard to reduce its original appearance.
  时间长了，更是难以还原其本来面貌。
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• 2.Surface area concentration Csa is a new parameter for indicating the characteristics of debris flow.
  表面积浓度c是一种新的表征泥石流体特性的参数。
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• 3.In case of park time area concentration diagram longer, should at denovo praxis before commit to thoroughly maintain at a time, replace engine oil, machine to filter etc.
  万一停放时间较长，应在重新使用前做一次彻底保养，更换机油、机滤等，并视情况检查燃油、电路等。
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