二相三线系统

【电】 tow-phase three-wire system

二的英语翻译：

twin; two
【计】 binary-coded decimal; binary-coded decimal character code
binary-to-decimal conversion; binary-to-hexadecimal conversion
【医】 bi-; bis-; di-; duo-

相的英语翻译：

each other; mutually; appearance; looks; look at and appraise; photograph
posture
【化】 phase
【医】 phase

三线系统的英语翻译：

【电】 three-wire system