原理: principle; tenet; axiom; theory 短语和例子根本的原理 a cardinal principle; 数学的基本原理 fundamentals of mathematics; 违反马克思主义的基本原理 contravene the basic principle of marxism; 详述 ... 的原理 develop the theory
电气: [电学] electrical; electric◇电气安装 electric mounting; 电气保护 electric protection; 电气保护装置 electric protective device; 电气病 electropathy; 电气材料 electric material; 电气测量 electric measurement; 电气传动 ele