(???)??????“B?????”:?????????

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

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

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

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

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

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

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

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

???“??0.5??”??????

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