为了使这种设计在狂风还是微风时都起作用，它们是经过风道测试和标准测试的。
Designed to perform in heavy winds as well as the lightest of breezes, they have been wind tunnel tested and calibrated.
经过非空调空间的空调金属风道应当用保温材料裹起来，保温材料外面加防潮层。
Air-conditioning metal ducts passing through non-conditioned spaces should be wrapped with thermal insulation enclosed in a vapor barrier .
采用低噪声风机和合适风道组成热风循环系统，干热空气直接经过受热物体干燥、灭菌。
Adoption of low-noise fan and suitable air channel that form the hot air circulating system, the heated dry air flows through the objects directly to dry and sterilize.
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