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真空容器内部并非wan全没有压强,而是压强极低,接近于零。真空状态下的压强与容器内外气体的分子数量、温度以及容器本身的性质有关。一、真空与压强的基本概念真空指的是一个空间内不存在物质或物质极少的状态,通常用于描述容器或系统中气体的稀薄 ...
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Cory Booker breaks record
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Reaches deal with Rogers
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Missing soldier found dead
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