[网络] 电灯开关;开关灯掣;电灯的开关 household and similar use light switches: 家用和类似用途照明开关switches: 交换机; 开关(20,246类)address switches: 地址开关automatic switches: 自动开关backbone switches: 骨干网交换机下载手机词典可随时随地查词查翻译