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hxwin

木虫 (正式写手)

大侠~

【答案】应助回帖

强度有方向性;硬度没有方向性。为正解~ :)
Disciplinemeanschoices.Everytimeyousayyestoagoalorobjective,yousaynotomanymore.Everyprizehasitprice.Theprizeistheyes;t...
11楼2012-09-11 07:21:23
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605214383

银虫 (初入文坛)

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楼上,说的是对的,,强度和硬度都是力学性能方面的体现,它们间的关系,材料的不同状态下是不一样的,,根据实际情况着情分析,建议多找点相关文献作为参考
天高任鸟飞,海阔任鱼跃。
12楼2012-09-16 22:04:22
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