diac双向开关: two-way switch; bidirectiona ...二极管: diode; two-electrode valve开关二极管: switch diode; switch-diode; switching diode波段转换开关二极管: band switching diode硅外延大电流开关二极管: silicon epitaxial highcurrent switching diode下载手机词典可随时随地查词查翻译