14/30294049 DC : 0被替代
BS EN 15502-2-1:2012/A1 - GAS-FIRED CENTRAL HEATING BOILERS - PART 2-1: SPECIFIC STANDARD FOR TYPE C APPLIANCES AND TYPE B2, B3 AND B5 APPLIANCES OF A NOMINAL HEAT INPUT NOT EXCEEDING 1000 KW
出版：British Standards Institution
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