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?? ??????? ?? ??????? ???????? ?? ??? ????? ??????? ???????? ?????? ????? ???????? ??? ???? ???? ????? ??? ????? ???????? ???????? ??? ????????? ??? ???? ???? ?? ???? ????? ???????? ???????? ??? ?????? ??????? ???????? ???????? ???????? ??????????? ????? ??????? ?????? ???????? ??????? ?????? ????? ????? ?????????? ??????????? ????????? ??????? ????????? ???????? ??????? ?????????? ??????????? ???????.

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????????? ????????:

????? ??????? ????? ???????? ???????? (GB2760-1996)? ????? ??????? ??????? ???????? ?? ????? ????? ??????? ????? ????????? ???????. ??????? ??????? ???????? ?? ???? ?????? ???????? ??????? ?????? ??????? ??? ???? ?? ??? ???????? ??????? ??? ???????? ??????? ????? ???? ?????? ??????? ????? ?? ???? ?????????? ????? ????? ???????. ??? ??????? ?? ?????? ??????? ??? ????? ???? ?????? ??????? ???????? ????? ??????. ?????? ???????? ????????? ?????????? ?????? ????? ???? ???????? ???? ????. ??? ????? ??????? ??????? ???????? ????? ?????? ??????? ??????? ??????? ??? ?????? ?????? ?????????? ?????? ???? ????? ?????? ???????? ?????? ???? ??????.

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?????? ????? ??????? ???????? ??? ????? ???? ???????? ?????? ?????? ???????? ?????? ???? ???? ????? ????? ???? ?????? ?????? ?? ???????? (????? 90%) ?????? ??????. ??? ????? ????? ???? ?????? ???? ???? ?? ???? ??????? ??????? ???????? ?????? ???????? ??? ??????? ??????? ?? ???????? ????.

??????? ?????? ??????:

?? ????? ??????? ?????? ??????? ????? ?? ???? ????? ???????? ??? ????? 8% (????? 6-7%) ?? ??????? ??????? ????? ????? ?????? ?????? ??????. ??? ?? ??? ??????? ???? ???? ?? ????? ?????? ??????? ?????? ???????? ????? ?? ??????? ???? ???? ?????? ??????? ???????? ???? ???? ?? ??? ?????.

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????? ?????? ?????? ?????:

??? ????? ??????????? ????? ????? ?????? ??? ????? ???????? ?? ????? ??????? ???????? ?????? ???? ???? ?????. ??????? ?????? ????? ?????? ????? ?????? ???? ????? ????????? ????? ????? ??????? ??????? ?? ?????? ??????? ???????? ?????? ????? ????????? ?????? ????? ???????. ??? ?????? ??? ??? ?????? ?????? ?????? ?? ????? ???????? ???????????.

???:

??????? ??????

???????? (??? ???? ???):	90.0% ???? ??????.
????:	2.0% ??? ????.
????:	6.0% ??? ????.
????????:	6.0% ??? ????.
????????	1.0% ??? ????.
??????? (15% 20 ???? ?????):	200~3000 ???? ??????.?????
????? ???????????:	6.0~7.5
?????? ??? ???????	30000/?? ??? ????.
??????? ???????	40/100 ???? ??? ????
??????? ??????? (??? ??????):	20 ??? ?? ??????? ??? ????.
???????:	2 ??? ?? ??????? ??? ????.
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