bipolar switchdouble pole switchdouble-pole switchdouble-poleswitchtwo pole switch双极: dipole开关: Q-switching双极开关掣: double-pole switch双刀开关 双极开关: double-poleswitch变极开关: polarization switch; pole changing switch下载手机词典可随时随地查词查翻译关注微信公众号:chachacidian,回复:双极开关,即可在微信中查询翻译