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(?) ??? ???? ??????? ???? ????????? ??????? ????, ????? ????? ?????? ?????????? ?????? ??? ???? ????, ??? ???? ??? ???? ?????? ????? ????, ????? ????????? ?????? ?????? ??????? ??????????? ???????? ????? ??? ??? ??????????
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?????? ?????
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???? ??? ????? | ????????? | ???? ???? | GB5492-85 ???????? |
??????? ???????? ??? | ??? | ???? ???? | ? |
?????? ??????? | ?? | ???? ???? | ? |
????? ????? | ?.?-?.? ?????/???? | ?.??-?.?? ?????/???? | ? |
????? ???? | ?? | ???% | ????????-?? |
??????? ???? ????? | ≤?.?% | ?.??% | GB5009.3 ???????? |
??????? ?????? | ≤?.?% | ?.??% | GB5009.4 ???????? |
?????? ?????????? | ???????? | ???? ???? | ???? |
???? ???? | |||
??? ???? ???? | ≤?? ?????? | ???? | |
???????? (??) | ≤?.? ?????? | ???? (????/??????.??) | |
???? (Pb) | ≤?.? ?????? | ???? (????????.??) | |
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