短語詞組短語biological powder activated carbon 生物粉末活性炭biological reinforced activated carbon 生物強(qiáng)化活性炭biological granular activated carbon 生物顆粒活性炭biological activated carbon process 生物活性炭工藝immobilization biological activated carbon 固定化生物活性炭aerated biological activated carbon 增氧生物活性炭biological activated carbon filter 生物活性炭濾池 返回 biological activated carbon