Turbospoke自行车排气管不仅有摩托车排气管的外观，还能够发出引擎的声音哦。
Turbospoke not only has the look and feel of a real motorcycle exhaust pipe, it also makes realistic engine sounds. [link]
Michael在天花板上的排气管道中爬行，通过下面的排气口了解自己的方位。
Michael moves through the ducts above the ceiling, crawling along on his belly, and peering below him through the air vent system.
描述了排气管中的典型流动，并根据计算结果对排气管进行了优化。
Typical flow patterns in the exhaust manifold was presented, and its structure is optimized according to the results of calculation.
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