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a(chn)ƷCϢ|(zh)δӋ
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Ůʿ̩V˾ҏS(chng)a(chn)ʯӢɰVȻʯӢV(jng)Yxˮϴɫo(w)s|(zh)ܶ2.66躬99.3%Cе7.5?? ?1.?ʯӢɰVϵʺĥp֮Ͳ1.5%ٷʰ|(zh)Ӌͬ?? ?2.?ʯӢɰVϵܶȲС2.55g/cm3ʹЌܶҪ߳?? ?3.?ʯӢɰVϑҊ(jin)ĸЙCs|(zh)VϵˮҺ**|(zh)1%ܶС2g/cm3p|(zh)ĺ0.2?? ?4.?ʯӢɰVϵƟp0.7%ʲ3.5?
x̩VϻϢ
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T˔ S(chng)e I(yng)I(y)~
M(jn)~ ~ ҪЈ(chng)
͑(h)Ⱥ
˾Q(chng):x̩V
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