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һרΪڲװζƵķܶȾϸܺͽṹǿҪӰ ܶҪ 

һܶȹģ

ܶһƽָ10001400¶ȹģϵ֮ ƾ֤عұ׼ܶȹģһƽ1.0g/cm#179;1.5g/cm#179;֮ ģԾнϺõķܺͽṹǿ 

ܶȵĿ

ܶܵصӰԭϵܶȡյ ԭϵܶǾܶȵҪ֮һ õĹư塢ˮάԭϵܶȾ1.0g/cm#179;1.5g/cm#179;֮ƳɵܶҲģ 

ܶȶܵӰ

ܶȶܺͽṹǿҪӰ һƽ˵ܶԽϵԽܺͽṹǿҲԽ ߵܶҲᵼӶʩѶȺͱǮ ѡܶʱҪƾ֤ʵƽ˼ 



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