The characteristics, basic circuit, and working wave pattern of transistor type optical coupler and its function in electronic control unit of hydraulic discharging machine were introduced.是什么意思_The characteristics, basic circuit, and working wave pattern of transistor type optical coupler and its function in electronic control unit of hydraulic discharging machine were introduced.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句