BBM Break C Before C Make
基本释义:
先断后通
网络释义
1)BBM Break C Before C Make,先断后通
2)MBB (make-before-break),先通后断
3)break-before-make,先断后合接点，先断后通
4)BBM (break-before-make),先断后通，先开后关
5)make before-break,先通后断;(电路)先接后离，先闭后开
6)leak-before-break (LBB),先泄后断
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