four-point switch是什么意思 four-point switch在线中文翻译

four-point switch 英 [fɔ: pɔint switʃ] 美 [fɔr pɔɪnt swɪtʃ]

four-point switch 词典解释

1. 四接点开关
   ...four-point starting box 四点起动箱 | four-point switch 四接点开关 | four-pole network 四端网络...

four-point switch