早期的喷气式发动机进气口狭窄且噪音巨大但是随着前部风扇直径的增大发动机变得越来越安静。
Early jet engines had narrow inlets and were very noisy, but as the diameter of the fans at the front increased, the engines became quieter.
阿地热系统在使用一个小风扇，空气是来自卧室通过埋在地下30厘米直径的管道。
A geothermic system where using a small fan, air is drawn from the bedroom through 30cm diameter pipe buried underground.
直接驱动工业风扇有叶片直径为36英寸，8英寸橡胶轮和15英尺软线。
Direct Drive Industrial Fan models have a blade diameter of 36 ", 8 "rubber wheels and a 15 'conductor cord.
高性能工业冷却风扇采用了30英寸直径的叶片。
High Performance Industrial Cooling Fan features a 30 "blade diameter."
这面由玻璃钢制作的大风扇由三片巨大的螺旋桨叶组成，每扇桨叶都像一面巨大的帆板，桨叶重5.6吨，整个大风扇的扇面直径达70米。
This fibreglass fan made up of three giant blades, each blade looking like a giant windsurfer and weighing 5.6 tons, the diameter of the entire fan reaching 70 metres.
快门式工业排风扇根据型号，刀片直径分别为12英寸，18英寸，24英寸或30英寸。
Shutter Mounted Industrial Exhaust Fan models are available with a blade diameter of 12 ", 18 ", 24 "or 30".
快门式工业排风扇根据型号，刀片直径分别为12英寸，18英寸，24英寸或30英寸。
Shutter Mounted Industrial Exhaust Fan models are available with a blade diameter of 12 ", 18 ", 24 "or 30".
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