分类	优先层 $F_{1}$	优先层 $F_{2}$	优先层 $F_{3}$	第 II 层最优厚度(mm)	第 IV 层最优厚度(mm)	温度超过 44℃的时长(s)
1	$d_{2}$	$ρ_{2} d_{2} + ρ_{4} d_{4}$	$d_{2} + d_{4}$	19.2	6.4	298
2	$d_{2}$	$d_{2} + d_{4}$	$ρ_{2} d_{2} + ρ_{4} d_{4}$	19.2	6.4	298
3	$ρ_{2} d_{2} + ρ_{4} d_{4}$	$d_{2}$	$d_{2} + d_{4}$	19.2	6.4	298
4	$ρ_{2} d_{2} + ρ_{4} d_{4}$	$d_{2} + d_{4}$	$d_{2}$	19.2	6.4	298
5	$d_{2} + d_{4}$	$d_{2}$	$ρ_{2} d_{2} + ρ_{4} d_{4}$	19.2	6.4	298
6	$d_{2} + d_{4}$	$ρ_{2} d_{2} + ρ_{4} d_{4}$	$d_{2}$	19.2	6.4	298