NEMA DC 5-1989(R2008) Residential Controls – Surface-Type Controls for Electric Storage Water HeaterNEMA DC 5-1989(R2008) Residential Controls – Surface-Type Controls for Electric Storage Water Heaters
部份国外标准涉及版权问题,所以全部国外标准于2013年02月,全部删除!相关页面仅提供参考消息。