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2,8·1019 ( 21 % 79 % ). 0,473 % .
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. , 25% . 18 : O, Si, Al, Fe, Ca, Na, K, Mg, H, Ti, C, Cl, P, S, N, Mn, F, Ba 99,8 % .
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, . () () . . , . , . . , (M.I. Ojovan, F.G.F. Gibb, P.P. Poluektov, E.P. Emets. Probing of the interior layers of the Earth with self-sinking capsules. Atomic Energy, 99, No. 2, 556562 (2005)).
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