主要组成部分的系统是一个连接装置由聚氯乙烯和聚苯乙烯泡沫塑料。

The primary components of the system are a connection device made from PVC and polystyrene foam.

youdao

主要组成部分的系统是一个连接装置由聚氯乙烯和聚苯乙烯泡沫塑料。

The primary components of the system are a connection device made from PVC and polystyrene foam.

youdao