【优点】：基础施工费用低安装，维修方便，通风良好，维护简单，无积水。

Advantages: low cost of foundation construction installation, easy maintenance, good ventilation, simple maintenance, no water.

youdao

【优点】：基础施工费用低安装，维修方便，通风良好，维护简单，无积水。

Advantages: low cost of foundation construction installation, easy maintenance, good ventilation, simple maintenance, no water.

youdao