Page 138 - 高中物理选择性必修3
P. 138

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                Ÿ ¢U@ n = 4 %Ÿ ,!Mp@ n = 1 %Ÿ %K¥j,.
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                     B. <ÌUm 6 n;kŽ%d1
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                     D. <ÌUm%d1%78Ìs/ 0 85 eV
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                     2. WA ( Ra)K&ȓ α l÷c β l÷,÷4jA ( Pb),Q¾jK α l
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              . 132 .
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