??????:??? ??? ??? ??? ??? ?? ????? ??????? ?????? ?? ?? ??????????? ?? ????????? ????? ??.
??? ??? ??? ??? ??? ?? ????? ??????? ?????? ?? ?? ??????????? ?? ????????? ????? ??.
??? ????? ??? ????? ??????? ???? ??, ????? ??? ??? ?? ??????, ??????????? ??? ????????? ???? ???? ???????? ??? ??. ??? ??? ??? ??? ??? ??? ??? ??????? 7 ????? ?????? ???????? ?????? ??? ???? ???? ???? ????? ??? ??? ??? ???? ????? ?? ????????.
???????? ????????? ????? ???. ???? ?????? ??? ? ???????????? ????? ?????? ?????? ?????, ?????? ??? ??? ?????? ??? ????????? ?????. ??? ????, 麻豆社?? ???? ?????? ???? ?? ? ????????? ?????? ???????????? ?????? ????? ??? ??. ??? ??? ?????? ??? ????? ????? ??? ??????. ? ?????, 麻豆社?? ???? ???????? ?????? ???. ??? ???? ???? ????? ???. ???????!??? ??? ??? ???? ??????? ?? ????? ????? ??, ????? ????? ?????? ???? ???? ??? ??.
1. ??? ?????? ??? ??????
?? ???????? ???????? ???????? ?????? ??? ??. ??????? ????, ??? ????? ??????? ??????? ?????? ??? 1.5:2.0 ??. ? ?????, ??? ????? ??? ??? ???? ????? ??????? ?????? ????? ??? ??. ????, ??? ????? ??????? ??????? ?????? ???? ?? ??? ???? ??? ?????????, ?????? ?????????? ? 1 ?? ????? ??.
?? ??????, ???? ???????????, ??? ????? ???????? ??????????? ??? ????? ???????? ??? ??? ??, ???? ????? ???? ?????? ???? ????????? ??.


2. ???? ???? ???? ???? ?????? ??? ??
???? ??? ?????? ??? ??????? ????? ??? ??? ??? ??????? ??? ??? ?? (??? ????? ???? ???? ????? ??????? ????? ??). ?????, ??? ??? ????? ???? ??????? ???? ?????????? ????? ??? ??? ??? ?? ???????? ??? ??? ?? - ??????? ?????? ??? ?????? ??????. ????????, ??? ????? ????? ???????? ????? ???? ???????? ???? ??? ????? ???????? ????? ??.
3. ????? ?????? ??????
??? ??? ??????? ???? 50-100 ???? ????? ?????? ??????? ????? ?????? ?????? ????? ????? ??? ??, ?????? ??? ??? ??????? ???? ?????? ?????? ????? ??????? ????? ????? ??? ??.

??? ????? ??????? ????? ?????? ????????? ??? ??, ?????? ??? ????? ??????? ??? ?????? ????????? ??? ??, ???? ????? ??? ?????? ???? ?????????? ???? ???? ??.
4. ????? ?????? ?????? ??
?????? ?????? ???? ???? ?? ????? ??????? ?????? ???????? ???????? ???? ?????? ???????. ???? ????? ???????? ??????, ???? ????? ?????? ????? ????, ???? ????? ???????? ???? ??? ???????? ???? ????, ?????? ?? ???? ?? ???? ?????? ???. ?????? ?????? ?? ??? ????? ?? ??? ???? ? ????? ????, ??? ?? ?? ?????? ????? ??????? ????? ??? ??. ??????? ????, ??? ??? ???? ?????? ?????? ?? ???? 40%-50% ??? ??, ??? ??? ??? ???? ???? 35%-45% ??? ??.
5. ???? ???? ???????
??? ????? ?????? ? ?? ?? ????? ??????? ????? ??? ?? ????? ??? ???? ??? ??, ??? ????? ??? ????????? ??? ??? ???? ??? ??, ??? ??? ??? ?????? ???? ????? ?????? ?? ???? ???.
?????? ??? ??? ???? ??????? ??????, ??????? ???? ????? ????????, ??????????? ????? ??? ????? ??? ???? ????? ??, ????? ????? ??????? ? ?? ?? ??? ?????? fen?meno ???? ??? ??.
6. ??????? ???????
?????? ??? ???? ??, ??? ??? ??? ? ??????? ??? ???? ??? ??? ??? ??, ?? ?????? ??????? ??? ????????? ???????? ????????? ??? ??? ??, ???????? ??? ????? ?? ??? ??????? ?????? ?????? ????.
7. ???? ???? ???? ????
?? ??????? ???? ??????? ???? ??? ????? ????? ??? ??, ???? tungsten ??? tin ???? ??? ???? ?????? ?????? ???????? ???? ????????? ??????? ???? ??? ????? ????? ????.
???? ???????? ?????? ????????????, ??? ??? ??????? ???? ????? ???????? ?????? ???? ????? ???????? ??????? ??? ??, ????? ???? ??????? ?????? ??? ???? ??????????? ??? ??. ?????? ??? ???? ??? ???? ????????? ???? ?????, ????????? ???? ??? ????? ????? ??? ???? ??, ???? ?????-??? ??? ??????? ?????? ????? ????. ???? ??????? ??? ??, ???? ?? ??? ??, ??? ????? ????? ??? ??? ??.
??? ????? ???? ???? ?????? ??????????? ??????? ??? ?????? ??????? ?? ??? ??. ???? ?? ?????? ??? ???? ????? ???.
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