English version
normally closed
是什么意思
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汉语
normally closed
常闭的，静合的
normally closed auxiliary contact
常闭辅助接点
normally closed contact
常闭触点，常闭接点
normally closed control element
常闭控制元件
normally closed interlock
常闭触头，休止辅助触头；常闭联锁装置
normally closed valve
常闭阀
