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1oúVϵʺĥp֮Ͳ3%ٷʰ|(zh)Ӌͬ
2oúVϵƽܶһ㲻С1.4g/cm31.6g/cm3
3oúVϑҊ퓎rмoú3%ܶȴ1.8g/cm3|(zh)8%
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2ڸNğoúСָIJ3%ָIJ2%
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(sh)(j)

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80

3.5

g/cm

1.4-1.6

ĥpʣ

1.3

g/cm

0.95

ʣ

1.5

2

϶ʣ

43

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