坡屋面坡度是27度,坡度系数该如何算?
坡屋面坡度是27度,坡度系数该如何算?
数学人气:175 ℃时间:2020-03-25 08:41:36
优质解答
坡度系数就是 tan 27° =0.51 =51:100
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