Erection of low voltage installations - Part 7: Requirements for special installations or locations - Section 753: Floor and ceiling heating systems; German version HD 384.7.753 S1:2002
低压装置的安装.第7部分:特殊装置或位置的要求.第753节:地板和天花板供暖系统;德语版HD 384.7.753 S1:2002