(???)?????“B?????????”:??????
???1?21????(???????????????????????? ??? ????????????)“???????50mm/s,??3°??????????5°,??????????????2-5N?????……”1????????????21??,?????,?,??????,?????????,?????
?????????“?????”,????????????“?”?“??????????”??????????????????????“???????????”?????????,???????“????”“?????????????”“?????????????”“???”“???????????”??????“???????????”???????,???????,?????????
?????????? ?????????? ??????????????????????“90??????”,??“?????????????????????????”10????????????“??????”,?????????,????????????????“B?”,???
9??,????????????????????????,??????,??????????????????,???????,?,????,??“????”??????,??????
?????????,?????,??,????????????“???”??“?”?
“???????????????????,?,??,???????????,?,?????????,????????????????????????????????,?????????????,????????????????”?????????
????????????????????????????????????,???????????10000?????????????????????????????,?????“???????”,??“?”?
??,???????16?????,???134?,?????465????????
?????“?0.5???”???
????????????,????,????????250??,?????????????????60???????????????,??????????????100%?(?????????????)
?????:??????????
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