3.The two units used most frequently in electricity are ampere and volt: this is the unit of voltage and that of current.电学上最常用的两个单位是安培和伏特：后者是电压的单位，前者是电流的单位。（增译）4.That like charges repel butopposite charges attract is one of the fundamental laws of electricity.同性电荷相斥，异性电荷相吸是电学的一个基本规律。（省译）第4节翻译练习41.Almost any insulated body processes to some extent the ability to retain for a time an electric charge.The angular contact bearing provides a greater thrust capacity.向心推力轴承有较大的轴向承载能力。几乎任何一种绝缘体都多少具有保留电荷一段时间的能力。2.3.The properties of the weld can be altered by varying the grain orientation.通过改变晶粒的方向可以改变焊缝的性能。2.1 词义的选择1.2.3.4.词类/词性（part of speech）：第1节翻译练习1上下文（co-text）：搭配（collocation）：第1节翻译练习2第1节翻译练习3学科专业/语域（register）：第1节翻译练习4第1节翻译练习11.The spindle rotates simultaneously roundtwo axes at right angles to each other.锭子同时绕两个互相垂直的轴旋转。（介词）2.The earth isn’t completely round; it is slightly flattened at the poles.地球并非完全是圆的，它的两极略扁平。（形容词）3.In each roundof operation the particle picks up energy from the oscillating electric field.粒子每运转一周都从振荡电场获取新的能量。（名词）