Biogas is one of the key components of agricultural biological energy. 農村沼氣是農業(yè)生物質(zhì)能的一個(gè)重要組成部分。
The technology of compressing and forming on cotton stalk fuel can transform solar energy into biomass energy. 棉稈燃料壓縮成型技術(shù)是把太陽(yáng)能轉化生物質(zhì)能所必需的技術(shù)。