Fault description

 Measure

( )


()
●
●
●
●
●
● ( )




●
●

●
●
● ( )
● R
●







●
●
●
●
●
●
●
●
● ( )
●
●　
●
●





①
CBNC SDC (20× )
] NO.6 SB [
《 ] NO.6 SB [ : H3BO3、KHF2、KOH、KBF4 》
（KHF2） :
① . ( )
② . ( . )
③
 
 
 
②

③