(??????)?????“B???”:?????????

??

???????1?21????????????????????????(????? ????????????????????????? ???)“???????50mm/s,?3°??5°,????????2-5N??……”1???21??,??,?????,????????????,????????????????????,???????

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

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

?????“90????????”,????????????????“??????????????”10??“??”,?????????,???“B????????????”,???

9????????????????????????????????,?????????????????,?????????????,???????,???????,??????,?????????????,??“??”??????????????????,???

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

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

????????????????,????????????????????10000???????????,??????????“?”,??????“?”?

????????????,???????????????????16??????,????134???????,????465???

???“????????????0.5???????”?????????

?????????????????????????????,???????????????,???250?????,???????????????????60????,??100%?(????)

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

?????????

?????(??????)?????“B???”:??????????????

????????