本文通过对某地下商场空气品质的测试及问卷调查，得出该商场存在着温度过高、新风量不足等问题。
We've measured air quality and taken a questionnaire in an underground emporium and found that the temperature was a little high and the fresh air volume was shortage, etc.
他说，在Thielert发动机设计方案中，散热器位于发动机整流罩下方，这导致散热效率低下，阻力增加，因为它的散热器太小了，而通风量有不足。
In the Thielert approach, he says, the radiator is under the engine cowling, which leads to low cooling efficiency and more drag, because of too small a radiator and poor ducting.
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