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旧 Mar 5th, 2008, 15:23     #34
风雪
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作者: 随风飘飘 查看帖子
侧面梯形的高度应大于梯形体高度5.25“
那就调整为精确计算

:

口:16-15/16"x 5-11/16"=16.9375x5.6875
底:16-7/16“x 5-1/4"=16.4375x5.25
高:5-1/4“=5.25

(16.9375+16.4375)*5.254555315+(5.6875+5.25)*5.25594901+16.4375x5.25

=175.37078+57.4869+86.296875=319.154775

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