tap density的用法和样例：
例句
- So RF plasma is a promising method for preparation of spherical submicron nickel powders with high tap density.
高频等离子体法是制备电极用高振实密度微细球形粉体的有效技术。 - The results showed that the aerated density and the trapped density reduced with decreasing of the particle size, but the trapped density changed in a stable range.
结果表明，随着鱼粉粒度的减小，其松密度逐渐降低，振实密度也相应减小，但振实密度基本保持在一个较为稳定的范围内。
