求翻译：当RT28含量达到40%时，制得的复合水泥板的表观密度、7天抗压强度及导热系数与普通膨胀珍珠岩水泥板相比约分别升高37.2%、40%和35.2%，均可达到建筑应用的标准。是什么意思？

When the the rt28 content of 40%, the apparent density of the obtained composite cement board, compared to 7 days compressive strength and thermal conductivity with the ordinary expansion of perlite cement board were approximately increased 37.2%, 40% and 35.2% are You can reach the standard of cons

When RT levels 28, 40 per cent of the composite system is the apparent density cement board, 7-day compressive strength and thermal conductivity with the normal expansion than perlite concrete slab approximately 37.2 % increase, 40% and 35.2 % in construction applications are able to achieve the sta

When the RT28 content achieved when 40%, the system results in the compound cement tile apparent density, 7 days compressive strength and the thermal conductivity and the ordinary inflated pearlite cement tile compares elevates 37.2% approximately separately, 40% and 35.2%, may achieve the construct

RT28 content reaches 40%, made of composite cement board for apparent density, compressive strength and coefficient of heat conductivity and 7 days compared to the normal swelling perlite cement boards about rising, 37.2% and 35.2%, respectively, are building standards.

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