Forests contribute to the balance of oxygen, carbon dioxide and humidity.
森林促进空气中氧气、二氧化碳和湿度的平衡。
Studying on drop temperature effect, add humidity effect, balance of carbon and oxygen effect, absorbing dirt effect, killing germ effect, decreasing noise effect and air anion effect.
分析了绿地系统的降温效应、增湿效应，碳氧平衡效应，吸尘、杀菌、减噪效应和空气负离子效应。
The main center to the breath regulation Respiratory center through the feedback mechanism control respiratory activity, maintains the oxygen and the dioxide carbon balance.
中枢对呼吸的调控呼吸中枢通过反馈机制控制呼吸活动，以保持氧和二氧化碳平衡。
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