drainage layer

基本解釋

As landfill site working, biochemical process and seepage of leachate always affect and change drainage layer permeability.
垃圾填埋場(chǎng)運(yùn)行過(guò)程中，滲濾液的滲流和生物化學(xué)作用，不斷影響和改變著排水層的滲透性能。
The invention discloses a roof garden device with a standard combination system, which comprises a waterproof layer, a drainage layer, a filter layer and a substrate layer;
本發(fā)明公開(kāi)了一種具有標(biāo)準(zhǔn)組合系統(tǒng)的屋頂花園裝置，包括防水層、排水層、過(guò)濾層和基質(zhì)層；
ip.com
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.
封場(chǎng)覆蓋系統(tǒng)是垃圾衛(wèi)生填埋場(chǎng)建設(shè)的重要組成部分，覆蓋系統(tǒng)包括氣體導(dǎo)排層、土工膜、排水層、植被表土層。