??????????????????? ??????????±??GB/T 23858-2009?????±?????????GB/T23858-2009??????????4??漲???????????????????????????????????
???????饗??????A15???????????????????е?????????????????????
????饗??????B125??????????е????????????С????????????????????
?????饗??????C250?????????С????????С???????????????????С?????????????·????·??0.5m???
?????饗??????D400?????:????????·????·???????·??????
????????????E600???????????????????????????????
?????饗??????F900????????????????????
????????????????????????????????????????????????????????????????????????????λ???????????????????????????????飬???????40????????????????????5????????????????5??x40??=200?????????????200T??λ?￡???????????????????????Щ???????80???????????????????????5??????????????????????80t/5=16t?????????????????????16???
????????????????????
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F316Ti??????? 
dc53???????????????? 
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