(???)?????“B??????”:?????????

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

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

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

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

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

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

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

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

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

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