The death rate has positive correlation to the exhaustion of the organic function, and it is in direct proportion to the number of this kind of exhaustion.
病死率与器官功能衰竭显著正相关，且与所并发器官功能衰竭的个数成正比。
The air exchange function has certain effect on Total Volatile Organic Compound(TVOC), and the effect is in direct proportion to the air flow volume.
换气功能对去除挥发性有机化合物（TVOC）有效，去除效果与换气量成正比；
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