... 先开后合 先开后合接点 break-before-make 先开后合触点 break before--make contact; break-before-make contact 后合 distoclusion; posterior occlusion; posteroclusion ...
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two way break before-make contact 双向先断后合触点
break before make contact 先断后合触点
change-over break before make contact 先断后通转换触点
make before break contact 先接后断切换触点
make-before-break contact 先闭后开触点 ; 先接后离触点 ; [通信] 先合后断触点
make-before-break changeover switch contact 先闭后断换向开关接点
two-way make-before break contact 双向先合后断触点
two-way make-before-break contact 双向先合后断触点
two way make-before break contact 双向先合后断触点
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