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热胀冷缩现象最明显的物体是什么
更新时间: 2021-04-17 00:40:11  

1、只有水(4°C以下)、锑、铋、镓和青铜等物质,在某些温度范围内受热时收缩,遇冷时会膨胀,恰与一般物体特性相反。

2、由于物体内的粒子(原子)运动会随温度改变,当温度上升时,粒子的振动幅度加大,令物体膨胀;但当温度下降时,粒子的振动幅度便会减少,使物体收缩。

关键词: 热胀冷缩 现象 明显 物体 什么

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