The practice of indoor gas pipe during main equipotential bonding of electrical conductor is put forward.

提出了建筑物内导电体总等电位联结中燃气管道的做法。

youdao

The practice of indoor gas pipe during main equipotential bonding of electrical conductor is put forward.

提出了建筑物内导电体总等电位联结中燃气管道的做法。

youdao