原帖由 cqfblue 于 2009-1-9 21:19 发表 anti-condensation heaters all motors in excess of 5 kw shall be provided with heating devices to prevent condensation during periods of idleness. heaters shall be of a fully insulated design, lon ... 请问一下上边这段话引用的是什么文献?请告知明确出处。 谢谢