. , 2 ? | |
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54
p n - , r = 0,165 , . , p n - N = 3,50∙1015 n - p - N = 2,25∙1015 p - n -.
j, p n -. | ||
j = /2 |
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53
54
: 2015-05-07; !; : 468 | :
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