新手 - 油隔一問

原帖由 Sirio 於 2009-3-24 21:52 發表

                               
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When an engine is running at full throttle, a large volume of burned gases flow through the exhaust. Part of the gases are expelled out of the exhaust pipe and part of the gases find their way tow ...

咁即是有什麼用途呀 ?

我英文唔好 ! 請用中文好嗎,我怕誤會左個意思 !!