學機械的都懂，這倆強度（和剛度）的差距不是一點點

來源: giddyup 於 2013-01-24 17:09:24 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.