【摘要】 提出了一种基于气体状态方程精确测定固体密度的方法。介绍了测量原理和测量系统。由于固体样品特别是粉末和多孔材料的体积难以测定 ,因而固体密度也难以精确测定。利用气体移动 ,能迅速、准确地测定固体样品的体积 ,从而能准确测出固体样品的密度。更多还原

【Abstract】 The densities of solid materials , especially the powder and porous materials ,are difficult to measure accurately because their volumes are difficult to measure. A method based on the equation of gas state is proposed for measuring densities of solid materials with different forms. The basic principles and measurement system are described. The volumes of solid samples can be measured rapidly and accurately by using the movement of gas, thus their densities are measured accurately.更多还原