定义1：由一根或多根相互绝缘的导体和外包绝缘保护层制成，将电力或信息从一处传输到另一处的导线。
Definition 1: A conductor consisting of one or more mutually insulated conductors and an outer insulating protective layer that transmits electricity or information from one place to another.
定义2：通常是由几根或几组导线（每组至少两根）绞合而成的类似绳索的电缆，每组导线之间相互绝缘，并常围绕着一根中心扭成，整个外面包有高度绝缘的覆盖层。电缆具有内通电，外绝缘的特征。
Definition 2: Usually a cable similar to a rope is made up of several or groups of wires (at least two in each group). Each group of wires is insulated from each other and is often twisted around a center, with a highly insulated covering covering covering the whole outside. The cable has the characteristics of internal electrification and external insulation.
分类
classification
电缆有电力电缆、控制电缆、补偿电缆、屏蔽电缆、高温电缆、计算机电缆、信号电缆、同轴电缆、耐火电缆、船用电缆、矿用电缆、铝合金电缆等等。它们都是由单股或多股导线和绝缘层组成，用来连接电路、电器等。
Cables include power cables, control cables, compensation cables, shielded cables, high temperature niaosu.07858.netshusongjiw.89ix.com wangdian.89ix.comgelishan.89ix.comchengbao.89ix.compentuji.89ix.comcables, computer cables, signal cables, coaxial cables, fire-resistant cables, marine cables, mining cables, aluminum alloy cables and so on. They are composed of single or multiple wires and insulating layers, which are used to connect circuits, electrical appliances and so on.