oxygen n cycle氧的循环;氧循环
hydrogen and oxygen combined cycle氢氧联合循环
hydrogen and oxygen hybrid cycle氢
Chapman's oxygen-cycle查普曼氧循环
carbon oxygen cycle碳
Closed oxygen cycle闭合氧循环
rogen-oxygen cycle碳氮氧循环
reactive oxygen cycle性氧循环
carbon-hydrogen-oxygen cycle碳氢氧环