An amende nt should decrease bulk density increase toltal porosity and incr ease water and air content.

改良剂能降低容重，增加总孔隙度，增加水和空气的含量。

youdao

An amende nt should decrease bulk density increase toltal porosity and incr ease water and air content.

改良剂能降低容重，增加总孔隙度，增加水和空气的含量。

youdao