7877| 12
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关于振动台做冲击试验的问题 |
点评
M作为单位就是兆,m作为单位是毫,相差了1000000000倍。
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发表于 2011-9-28 23:37
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发表于 2011-9-29 14:16
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发表于 2011-9-30 22:04
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发表于 2015-6-30 13:36
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发表于 2015-6-30 18:18
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发表于 2019-8-3 17:57
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