专业的讲法：开关合闸:switchclosing；switchmaking;switchturnon开关分闸:switchopening;switchcutting;switchturnoff
匿名回答于2019-10-03 06:48:53
专业的讲法：开关合闸 :switch closing；switch making;switch turn on开关分闸:switch opening; switch cutting;switch turn off
匿名回答于2019-08-10 07:27:04
