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lrgU2013-12-20 14:47:32 cʩU

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၆FۺFoúVϵļgҪU

1oúVϵʺĥp֮Ͳ3%ٷʰ|Ӌͬ 

2oúVϵƽܶһ㲻С1.4g/cm31.6g/cm3ʹЌƽܶҪ߳⡣ 

3oúVϑҊҺмVϵˮҺж|4%ܶȴ1.8g/cm3|8% 

4oúVϵ}ʲ3.5%

၆FۺFoúVϳҎU

0.50.8mm0.81.2mm0.81.8mm12mm24mmȡ


Ų䰸/SC̖UԥICP17040362̖ վҪչʾaƷЩU

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