DTU 65-7. BUILDING WORKS. PRIVATE CONTRACTS. EXECUTION OF FLOOR HEATING THROUGH ELECTRIC CABLES SET IN CONCRETE. PART 2: SPECIAL CLAUSES.是什么意思_DTU 65-7. BUILDING WORKS. PRIVATE CONTRACTS. EXECUTION OF FLOOR HEATING THROUGH ELECTRIC CABLES SET IN CONCRETE. PART 2: SPECIAL CLAUSES.在线翻译_英语_读音_用法_例句