concrete under mine

• 井下混凝土

concrete under mine的用法和样例：

例句

1. It is proved that the model of sulfate-ion distribution in concrete has the good fitting and the forecasting effects.
   经验证，该模型对硫酸盐侵蚀作用下混凝土中硫酸根离子分布具有良好的拟合及预测效果。