For the material studied, the angularity of pebble is the smallest, while the angularity difference between limestone, granite, basalt and andesite are not obvious.

• 对于所采用的材料，卵石的棱角性最差，石灰岩、花岗岩、玄武岩与安山岩4个集料的棱角性差异并不显著。