Can burn, vapor and air to form an explosive mixture, the explosion limit of 7%-73% (volume).
能燃烧，蒸气与空气形成爆炸性混合物，爆炸极限7% - 73%(体积)。
The form of the roof reduces the building's volume.
屋顶的形式减小了建筑的体积。
Mass per unit of volume in powder form, including the air trapped between the particles.
每单位体积粉末的质量，包括粒子之间的空气。
Mass per unit of volume in powder form, including the air trapped between the particles.
每单位体积粉末的质量，包括粒子之间的空气。
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