??“???”!???????????“??”?? ?????

????:???600??????:???????

??“??????????????”???????????,?,??“??????????????”??????????????“???????”?????“???”,??,????????200????????,??????30????,??,??????????

“????????????????”???“????”?????(??)?(??????1949??,??15???)??????????????,????“?????”????????

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

???,????,“???????”???????????“???????”???,??????????5?????????????????“??????”?????????????,????????????????????“??”,???“?????????????”?????????,???,???

?????????????,???????????????????????????????????????????????,???????,??????????????????????????????????????????????????????????????????,??(250~800??)??????????????(???30~60?????????????,??80??????),?????????????

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

?????,???????,???????????????????,??????????????????……??????,???????????“??????????”????,????????,???????????????,??????????,???????????????30°C?

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

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