(??????)?????????“B???”:?????

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

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

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

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

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

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

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

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

???“??0.5???”???

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