那時學過拖拉機柴油發動機四衝程，吸氣，壓縮，爆炸（做功），排氣。一輩子不忘啊！

來源: nyagela 於 2015-07-07 10:18:33 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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