... 油膜轴承;油膜轴承合金：kelmet 油膜水驱机理：surface film drainage 油膜层：oil lamella ...
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Closure cover system is one of important parts of landfill site construction, it includes landfill gas discharge guiding layer, geotechnical film, drainage layer and plant cover surface soil layer.
封场覆盖系统是垃圾卫生填埋场建设的重要组成部分，覆盖系统包括气体导排层、土工膜、排水层、植被表土层。
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