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发表于 2009-4-17 16:37:58
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MOA是Minute Of Angle的缩写,意思为“一分的角度”
是角度的单位,并不是直径长度的单位,一个圆周360度,1度为60分。
在一百码处,角度的1度正好是1英才多一丁点。
Ask most shooters to define minute of angle (MOA) and you'll probably elicit the reply, "It's an inch at 100 yards." A purist overhearing this will almost certainly chime in with a smug correction to the effect that a minute of angle is really 1.0471996 inches at 100 yards, but if you're numerically challenged and ask nicely, you may round it off to 1.05 inches. As a lifelong nitpicker, I admire the precision the purist brings to the party, but as a shooter I think I'll stick with a simple, useful, rounded-down inch. After all, even at 1000 yards the additional decimals don't quite add up to a half-inch. I, for one, cannot hold close enough at that distance for the discrepancy to matter. |
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