bbm break before make

先断后通  detail>>

break before make contact

先断后合触点  detail>>

break before--make contact

先开后合触点  detail>>

break-before-make

先断后合 先断后通 先开后合 先开后合接点 先开后合(接点)  detail>>

break-before-make contact

先断后合 先开后合触点  detail>>

break-before-make contacts

离合接触 先断后合接点  detail>>

make before break contact

先接后断切换触点  detail>>

make-before-break

先合后断 先接后断 先接后离  detail>>

make-before-break contact

先闭后开触点 先合后断触点 先合后断角点 先合后断接点 先接后断触点 先接后离触点  detail>>

make-before-break spring

先接后离触簧片  detail>>

make-before-break switch

先合后断开关 先接后断开关  detail>>

break-before-make spring combination

先后开合簧组  detail>>

two way break before make contact

双向先断后合触点  detail>>

two way make-before break contact

双向先合后断触点  detail>>

two-way break-before-make contact

双向先断后合触点  detail>>

two-way make-before break contact

双向先合后断触点  detail>>

bbm

断背山 断脊山 高效锁水因子 公共服务星章 牛骨髓 涛涛  detail>>

make a break of

连续得分  detail>>