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1988| 1
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哪些的仿生细长结构强度和抗弯强度比较好。如竹子 |
Archiver|手机版|小黑屋|机械社区 ( 京ICP备10217105号-1，京ICP证050210号，浙公网安备33038202004372号 )
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发表于 2013-3-4 21:14:20
