再经软练胶砂强度试验，证明是理想的活性混合材料。

Through plastic mortar strength test, it has been proved as the ideal active admixture.

youdao

再经软练胶砂强度试验，证明是理想的活性混合材料。

Through plastic mortar strength test, it has been proved as the ideal active admixture.

youdao