短語詞組短語starting g phase 初相starting phase angle [電]初始相位角starting phase optimization 初相優(yōu)選starting open -phase protection 起動時斷相保護裝置Absence -phase starting 缺相起動split -phase starting 分相起動split phase starting 分相起動vacant phase starting 缺相啓動splitting phase starting device 分相起動裝置 返回 starting phase