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S

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Pb

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Cu

D?

Zn

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%

%

%

%

%

?á1?

85

?ü0.05

0.045

0.025

0.04

 

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3??3.75

0.58

100

?ü0.8

?ü0.98

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2??ù?è??êy(k80)

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T/M3

T/M3

%

%

mm

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1.57

0.95

1.1

??50

1.8-2.0

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