水泥石预拌混凝土最基本的成分。

Cement is the main basic ingredient of ready-mix concrete.

youdao

美国水泥需求量三季度已经下降了19%，预拌混凝土下降了30%，骨料下降了31%。

US cement volumes had fallen 19% in the third quarter. Readymix has fallen 30% and aggregates 31%.

youdao

美国水泥需求量三季度已经下降了19%，预拌混凝土下降了30%，骨料下降了31%。

US cement volumes had fallen 19% in the third quarter. Readymix has fallen 30% and aggregates 31%.

youdao