The new type DC solid state relay is a kind of new contactless switching device,with the new type IGBT and power field effect tube as the core and composed completely by solid state electron devices.是什么意思_The new type DC solid state relay is a kind of new contactless switching device,with the new type IGBT and power field effect tube as the core and composed completely by solid state electron devices.在線翻譯_英語_讀音_用法_例句