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1. ʯӢɰVϵʺĥp֮Ͳ1.5%ٷʰ|Ӌͬ
2. ʯӢɰVϵܶȲС2.55g/cm3ʹЌܶҪ߳
3. ʯӢɰVϑҊĸЙCs|VϵˮҺж|1%ܶС2g/cm3p|ĺ0.2%
4. ʯӢɰVϵƟp0.7%}ʲ3.5%
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1. ΌӻpӞVϞVصʯӢɰVһ0.51.2mmӞVϞVصʯӢɰVһ0.50.8mm
2. ڸNʯӢɰVСָIJ3%ָIJ2%
3. ʯӢɰVϵЧͲϵʹÆλ_
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