文件名称:biogas-generator
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- 上传时间:2012-11-16
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文件大小:478.93kb
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Biogas is considered to be a source of renewable
energy. This is because the production of biogas
depends on the supply of grass, which usually grows
back each year. By comparison, the natural gas used
in most of our homes is not considered a form of
renewable energy
energy. This is because the production of biogas
depends on the supply of grass, which usually grows
back each year. By comparison, the natural gas used
in most of our homes is not considered a form of
renewable energy
相关搜索: renewable energy
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biogas-generator.pdf
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