??????3374?г?????11.8%??1?β??????????????л?3330???3305-3300????????

>>

л?3330?

????

?3300????104???3300??????ж??????Σ??3400????￡滹????г???5?10?5??гл?3330?????????·3300?г??λ?λ???·??1820-1800

>>

??

??

???γ???????????????????μ??????г????????????????λ????????????·????????衢????С???????????1???50%??1?黹???????

?