Zobrazeno 1 - 1
of 1
pro vyhledávání: '"sideward light"'
Publikováno v:
Gong-kuang zidonghua, Vol 40, Iss 2, Pp 105-108 (2014)
In view of present status that current coal mine gas drainage station using independent lightning rod for direct lightning stroke protection, problems and hidden troubles of the status were analyzed, and a new type of lightning protection and groundi
Externí odkaz:
https://doaj.org/article/6061cb70deb34cb0ac46fc3032003291
