国产又粗又深又猛又爽又黄A片,国产成年无码久久久久毛片 ,FREE性ⅤIDEO另类重口,白嫩的18SEX少妇HD

400 086 1088

CN

Biogas and Biomass

Application

of

Biogas and Biomass

Improving environment and saving resources, the utilization of biomass resource is more important.   

With the limited reserves of non renewable fossil resources such as petroleum, coal and natural gas, the problems such as the limited reserves, non biodegradable and polluted environment are becoming more and more serious. As the only renewable resources that can be converted into liquid energy and substitute for petroleum based chemical products, the chemical use of biomass resources directly affects all aspects of people's life.

Biomass includes plants, animals and their excreta, garbage and organic wastewater, coal gasification and so on. In a broad sense, biomass is an organic matter produced by plants through photosynthesis. Its energy is originally derived from solar energy, so biomass energy is a kind of solar energy.

ONUEE / ONWARDS(HK) Ltd. All rights reserved  @ 2004-2024 備案號粵ICP備09176163號