DIN 4702-8:1990-03 Central heating boiler; determination of the standard efficiency and the standard emissivity

标准编号：DIN 4702-8:1990-03

英文标题：Central heating boiler; determination of the standard efficiency and the standard emissivity

德文标题：Heizkessel; Ermittlung des Norm-Nutzungsgrades und des Norm-Emissionsfaktors

发布日期：1990-03

标准预览图