can you make out the difference between valve and cylinder?

來源: triangle 於 2011-02-25 12:02:14 [] [舊帖] [給我悄悄話] 閱讀數 : (38 bytes)
回答: 喔, 明白了, 您那一缸是肛門. 由 我胡說八道 於 2011-02-25 06:13:01

when talking about engine size?

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