當(dāng)前位置:
首頁 >
標(biāo)準(zhǔn)詳情頁

En 1151 Pumps - Rotodynamic Pumps - Circulation Pumps Having An Electrical Effect Not Exceeding 200 W For Heating Installations & Domestic Hot Water Installations - Requirements, Testing Marking
出版:British Standards Institution

專家解讀視頻