(?????????)?????“B??????”:???

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

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

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

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

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

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

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

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

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

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