Introduction to micro-bubble pure oxygen aeration for renew oxygen in rivers and lakes
chen zhi-tai1 li shi-gang2 han guang-yao2 xie you-chang3 (1.second design institute of the chemical institute; taiyuan; 030001; china; 2.beijing peking university technology company; beijing; 100080; china; 3.surface structure group institute of physical chemistry department; peking university; beijing; 100080; china)