(?????)?????????“B???”:??????

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

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

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

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

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

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

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

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

????????“?????0.5???”??????????????????????????

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