短語(yǔ)詞組短語(yǔ)low ballast impedance 低道碴電阻adjustable impedance type ballast 可調(diào)阻抗式鎮(zhèn)流器adjustable e impedance type ballast 可調(diào)阻抗式鎮(zhèn)流器 返回 ballast impedance