91/33885 DC : NOV 91被替代
AMENDMENTS TO IEC 947-2: 1989 (A) CLAUSES 8.3.2 AND 8.3.2.1 (IEC 17B (SECRETARIAT) 402); (B) APPENDIX B (TO REPLACE ITEMS UNDER CONSIDERATION )(IEC 17B (SECRETARIAT) 403)
出版：British Standards Institution
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