2010????? ?????????????????????? 8????, ??????, ???????, ?????λ??,????????????? ??????????? 5???????? ??????? ?????????. ?츮 ??? ?????? ??????? ?????? ??? ?θ??? ??? ????? ???? ???????? ?????? ?????????.
????? ????????. ?????? ???? 21???? ÷?????? ????????. ????????? ????? ????????, ?????? ????????? ????? ????????θ????, ?????o븦 ?¿??? ?????? ???????????? ????????? ?????? ????? ??????? ?????????? ???????.
???? ÷????л?????????? ?μ? 3???? ????????, ???????, ????????????,????????,????????????, ????????????,?????μ??? ?? ???γ???????? ?????? ????????? ????????. ????????(r&d) ????? ??????? ?????? ?????븮?? ?????????.
21????? ????? ?????????. ???,????,???????,?????????,hd????,?????? ?? ?????? ?????? ???? ?????? ????, ????? ???? ??? ?????? ?????????. ??? ?????????÷????? ????, ??þ????? ????? ?????? ??þ????????ø? ??? ????????? ??????? ???????????.
???? ?? ???? ??????????? ????? 220?? ?????????? ?????? ????????. 140?? ???÷δ? ????? ?????? ?? ???????. ?强,???,???,???? ???? ??????? ????????? ????????? ?????????? ????? ??????? ????. ?? ????? ??o?? ???????? ?????? 20-30?? ????????? ?????? ????????. ????,?λ?o?? ????? ??????? ??????? ????? ?????μ? ?? ????? ??????.
??????? ???????? ???갭?? ????? ?????? ???? ?????? 21???? ???갭?o??? ?뿪?? ????????. ???갭?? ?????? ?????? ?????? ???? ?????? ??????. ??? ???? ?????? ?????? ???????????, ?????? ???, ???? ???? ?? ?????? ???? ??????? ?????? j????????? ?????? ???? ?? ?????? ????? ?? 21???? ??????o??? ????? ???? ??????.
?????? ?????б?,??????,???п????,???????? ?к????????, ?????? ???? ?? ????????? ????????? ???????????. ?????? ??????? a?? ?а? ?????? ?? ?? ??? ???? ??????????? ?? ?????? ??????????. ???????? ???硯???? 21???? ???? ?????? ??????? ?????? ??????.
1000?? ??? ?????? ??????? ???????? ??????? ??????????. ???? ?????? ?????? ??????? ????? ?? ??? ?????? ????? ????????. ???? ??????? ?????? ???? ??????? ??????????? ????????. ????? ??? ??? ????? ?????? ???????? ??????? ?u? ?????? ?? ????? ??????.
?????? ???? 21??? ?????????? ???? ?? ????? ?? ???? ?? ????? ??????? ?????????????? ??o???????. ????????????, ????? ???????, ???????uμ???,???????????,?????????? ???? ???????????.