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a(chn)ƷCϢ|(zh)δӋ
Ůʿ̩V˾ҏSa(chn)ʯӢɰVȻʯӢV(jng)顢Yxˮϴɫos|(zh)ܶ2.66躬99.3%Cе7.5ȡ?? ?1.?ʯӢɰVϵʺĥp֮Ͳ(yng)1.5%ٷʰ|(zh)Ӌͬ?? ?2.?ʯӢɰVϵܶȲ(yng)С2.55g/cm3ʹЌܶҪ߳?? ?3.?ʯӢɰVϑ(yng)ҊĸЙCs|(zh)VϵˮҺ(yng)**|(zh)(yng)1%ܶС2g/cm3p|(zh)ĺ(yng)0.2?? ?4.?ʯӢɰVϵƟp(yng)0.7%ʲ(yng)3.5?
x̩V˾a(chn)ʯӢɰƺʯӢɰVˮʯӢɰɰʯӢɰ|(zh)C|(zh)ϸrИI(y)gӭǢՄ
ʯӢɰSҵ^(q)һҴʯӢɰa(chn)I(y)I(y)a(chn)(jng)IN(yu)|(zh)
2021-05-08ʯӢɰSҵ^(q)һҴʯӢɰa(chn)I(y)I(y)a(chn)(jng)IN(yu)|(zh)
2021-05-08ʯӢɰSҵ^(q)һҴʯӢɰa(chn)I(y)I(y)a(chn)(jng)IN(yu)|(zh)
2021-05-08ʯӢɰSҵ^(q)һҴʯӢɰa(chn)I(y)I(y)a(chn)(jng)IN(yu)|(zh)
2021-05-08go(j)OuZThuZ܌кܸߵąrֵ