求翻译：在微氧活性污泥中存在着好氧微生物，其正常的生长代谢消耗了溶解氧，使得反应器中存在一定体积的厌氧微环境，为厌氧微生物提供了生长空间。因此，在反应器中存在着由好氧微生物、兼性厌氧微生物及厌氧微生物组成的生态群落。是什么意思？

Micro-aerobic activated sludge in the presence of aerobic micro-organisms, their normal growth and metabolism of consumed oxygen, making the reactor there is a certain volume of anaerobic micro-environment for the growth of anaerobic micro-organisms to provide a space. Therefore, there is in the rea

In micro-oxygen activated sludge have existed in the aerobic micro-organisms, their normal metabolic consumption growth has enabled an effector in dissolved oxygen, there is a certain volume of anaerobic micro environment for anaerobic growth has provided space. Therefore, the presence in the reacto

Has the oxygen microorganism in the micro oxygen active sludge, its normal growth metabolism has consumed the dissolved oxygen, enables in the reactor to have certain volume to tire of the oxygen micro environment, for tired of the oxygen microorganism to provide the growth space.Therefore, exists i

Aerobic microorganisms in activated sludge micro-oxygen, its normal growth metabolism of dissolved oxygen consumption, makes reactors existing in certain volume of anaerobic micro-environment, provided growth space for anaerobic microorganisms. Therefore, present in the reactor by aerobic and anaero

There in the micro-aerobic activated sludge aerobic, its growth and metabolism of normal consumption of dissolved oxygen, anaerobic reactor there is a volume of micro-environments, provided growth space for anaerobic microorganisms. Therefore, present in the reactor by aerobic and anaerobic, faculta