gravel clay

• 砾质黏土

gravel clay的用法和样例：

例句

1. The built prediction model is characterized by high precision, can be used to evaluate the effect of the freeze thaw cycles on the service life of the silty clay roadbed.
   通过与试验对比可知，预测模型具有较高的精度，可以用来评估冻融循环对粉质黏土路基使用寿命的影响。