序 前 言 PART 1 Electrical and Electronic Engineering Basics ……………………………………… 1 UNIT 1 A Electrical Networks …………………………………………………………………… 1 B Three ̄Phase Circuits ………………………………………………………………… 4 C 专业英语(Specified English)概述 …………………………………………………… 7 UNIT 2 A The Operational Amplifier …………………………………………………………… 9 B Transistors …………………………………………………………………………… 12 C 专业简介 …………………………………………………………………………… 15 UNIT 3 A Logical Variables and Flip ̄Flop ……………………………………………………… 17 B Binary Number System ……………………………………………………………… 20 C 专业英语的翻译标准 ……………………………………………………………… 24 UNIT 4 A Power Semiconductor Devices ……………………………………………………… 25 B Power Electronic Converter ………………………………………………………… 31 C 专业英语的词汇特点 ……………………………………………………………… 34