The system had the advantages of small shape, convenient usage, no pollution and low cost.

该控温系统具有体积小、使用方便、无污染、成本低的优点。

youdao

The system had the advantages of small shape, convenient usage, no pollution and low cost.

该控温系统具有体积小、使用方便、无污染、成本低的优点。

youdao