GOST R 54850-2011 Roof windows and skylights Metod for determination of reduced of thermal resistance《天窗 热阻降低程度的检测方法》.pdf

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2、rformance of windows and doors Determinationof thermal transmittance by hot box method Part 2: Dormers and other rice windows(NEQ) 548502011 27 2002 . 184- , 1.02004 . 1 - - 2 465 3 15 2011 . 1555-4 -:- 8990:1994 . . (ISO 8990:1994 Thermal insulation Determination ofsteady-state thermal transmission

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