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通断
closed open closed-open on off  detail>>
块断酌
block faulting blockfaulting  detail>>
通 断酌
on off action  detail>>
通断比
break-make ratio make break ratio  detail>>
触点[通断]判定
contact sense  detail>>
断续比,通断比
break-make ratio  detail>>
开闭[通断]机构
make-and-break mechanism  detail>>
开关通断
switch on and off  detail>>
快速通断型
quick-make-and-break type  detail>>
普通断层像
ordinary tomogram  detail>>
通断按键
on off keying  detail>>
通断操作
make break operation  detail>>
通断测试
on off test on-off test  detail>>
通断动作
on off action  detail>>
通断机构
make and break mechanism on off mechanism on-off mechanism  detail>>
通断继电器
on off relay  detail>>
通断检查
continuity check  detail>>
通断键控
(ook) on-off keying  detail>>