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2 �y��_��ȁ�Դ

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3.2.2 ��ƽ�Q��Ę�(bi��o)��(zh��n)��_�� c��ƽ�Q��}��(n��i)��ͬ�|(zh��)��z,��ҕ��ͬ��ȣ��Q��r(sh��)�o��,��ƽ�z��C��(bi��o)��Ԟ��0.2mg,��ҕ��ηֲ��t��(bi��o)��(zh��n)��_��Ȟ飺��?y��n)�Q��õ��ǜp��,��ʷQ��Ę�(bi��o)��(zh��n)��_��Ȟ�0.2mg /3=0.12mg��?y��n)�Q��õ��ǜp��,��ʷQ��Ę�(bi��o)��(zh��n)��_��Ȟ飺2×0.122=0.17mg��t�ɷQ��(du��)��(bi��o)��(zh��n)��_��u(m)�飺0.17mg/0.2018g=0.084%,��

3.2.3 ��(bi��o)��w�e�Ĳ��_�� (1)�ζ��ܵ�У��(zh��n)��ζ�ʹ��50ml��ʽ�ζ��ܣ�A��(j��)��,��ՙz��Ҏ(gu��)�̣��S�`��±0.05ml,��(du��)��S�`��±0.1%,��վ��ηֲ��t�ζ��w�e��(du��)��(bi��o)��(zh��n)��_��u��V��飺u(V)=0.1%/3=0.0577%,��(2)�h(hu��n)��ضȣ��(sh��)�(y��n)�h(hu��n)��ڿ��{(di��o)�l��,��Ҝؽ��20�档�ض��20��,��(bi��o)��(zh��n)��Һ�Ĝض��a(b��)��ֵ�ǳ�С,��(du��)��(sh��)�(y��n)�Y(ji��)��Ӱ푿ɺ��Բ�Ӌ(j��),��ڲ��_��ȷ��в��һ�ض�Ӱ��Ĳ��_��뿼�]��(3)�ζ��K�c(di��n)��Дࣺ�K�c(di��n)�r(sh��)��`��±0.05ml��1�ε��w�e��,��c(di��n)�ֲ�,��F(xi��n)�ɽK�c(di��n)�ֲ��Д��Ę�(bi��o)��(zh��n)��_��Ȟ�0.05ml��(du��)��(bi��o)��(zh��n)��_��Ȟ�0.05ml/38.32ml=0.13%��(bi��o)��w�e��Ӱ��(du��)��(bi��o)��(zh��n)��_��U��V��0.0572+0.132=0.142%��

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