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״ԪТĸС˵,ŷΨ˿࿨ͨѸ,Ůעⱨ첥

    dzʹΪ㷺ܶһΪ500 kg/m3600 kg/m3ҪʹڽṹеǽǽеأܶΪ700 kg/m3800 kg/m3ڽоṹе״ԪТĸС˵,ŷΨ˿࿨ͨѸ,Ůעⱨ첥أ¿ܶһΪ300 kg/m3400 kg/m3Ҫڽﱣ¸ȣǽ嶼Ǽӽ;ͬͬƷҪ

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ӦЩ
    һ߲ܽʵ֤ڸ߲ܽеӦǾúģرǽձõͬ
״ԪТĸС˵,ŷΨ˿࿨ͨѸ,Ůעⱨ첥    ڼᣬ佨ĵΪСԿש콨ȣͬĽͬĵ£𺦳̶һש콨ڴ7ƻ

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ʱֻ6Ͳƻ1975꺣ǵʱ30റ׻չ΢ڽש콨;1976ɽʱа׼ׯһ¥ؽ700kg/m2ʱڵҶΪ6ǿ£ûгµѷ죬50mIJϽṹסլ²ȴбѷ졣
    Ϻıܺã200mm

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ǽıЧ൱490mmשǽıЧںĽЧͻо
    ġʵػͬػ£״ԪТĸС˵,ŷΨ˿࿨ͨѸ,Ůעⱨ첥IJ࣬ Ҫȱ󣬵ģͣ¶˼ʺгϣ¶ȴ80ĻᡢΣĻ;ڳʪĻرںӦע⡣

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