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

????:??????:51pc·mc??????

?8???????????????8???????? ????:????????????:????

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

???????????????????????????,?;?????????????????,?,?????????????????????,??????????????;?,?????,?????????????????????????????……????8???????????????????8????“??? ???????”???????????,?????????????

8??8??????????????,????????????????????????????????? ????

???,????,??????,?????????8000???????40000????,?????????????????400??????????

“????????????”?,???????????????8000????????,?????????????,??????

8????8???????????,??????????????????????? ??????

“???‘????’‘??????????????????????’‘?’‘??????’4?????????????”????????????,“???”??,“?”??,“?”?,????,“????????????????????????????”??????

“??8??11?????????”???????,??????1.0???????????,????????????????,??????,??????,?2.0?????“??????,?????????,?????????????,??,????”(?????????????????)

??:??