In these pits shops specialized channels, and impervious layer, used for the collection of refuse from fermentationgases and leachate.
在这些坑中铺有专门的管道和防渗层,用来收集垃圾发酵产生的气体和渗滤液。
2
Gases and organic acids are also produced by saccharolytic fermentation.
气体和有机酸也由糖化菌发酵。
3
It was formerly derived by fermentation of carbohydrates but is now made synthetically by aldol condensation of acetaldehyde or by oxidation of petroleum gases.