In China, the mined petroleum resources which per person occupies are very needy, and there are in need of nearly one hundred million tons of petroleum every year in our country. On the other hand, there are 4~5 hundred million tons various kinds of agriculture straw of pole, as well as corn hull skin 1.3~1.5 hundred million tons of the forestry bark , the sawdust, and the branches etc the surplus living creature will to be used. The purpose of this thesis mainly aim to establish a series of desi...
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