(?????????)???“B?????”:??????

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

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

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

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

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

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

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

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

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

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