1·The reason was that over the short distances spanned by early power grids, AC transmission suffers lower losses than DC. It thus became the industry standard.
选择交流电作为工业标准的原因很简单，在早期供电距离很短的电网里，交流电的损耗比直流电小。
2·Edison, never shy about exploiting a situation to his advantage, especially if it could cripple a rival, therefore directed Brown to rig the chair to operate on AC.
爱迪生从来不羞于利用对他有利的形势，尤其是如果这种形势可能严重削弱竞争对手的话，因此，他指挥布朗给这张椅子装配交流电以起作用。
3·The switch was thrown, and 1,000 volts of AC slammed into Kemmler.
开关接通，1,000伏特的交流电猛击凯姆勒。
4·The ac adapter (as it's more accurately known) simply converts the ac current from a wall outlet into low-voltage, low-amperage DC current that it provides via a USB port.
AC适配器(这是交流电源更准确的说法)只是把来自墙上插口的交流电转化为低伏特、低安培的直流电源，并通过USB接口充入手机。
5·With its high maturity three-phase ac drive technology has become the standard for practically all new vehicles.
交流电传动技术的不断成熟，使其真正成为所有新机车动车的标准。
1·For two decades, Zhang's AC business boomed.
20年来，张的空调业务蓬勃发展。
2·These include a floor plan and building materials that maximize natural cooling in the building, which mean that they will forgo any traditional AC.
其中包括一个建筑平面图和能使建筑最大限度自然冷却的建筑材料，也就是说，他们将放弃所有的传统空调。
3·Crank up the AC, grab a glass of ice water and get ready to enjoy these seven titles guaranteed to help occupy your mind with chilly thoughts.
空调开到最大，端杯冰镇饮料。 准备好了嘛，来享受这七款名副其实的消夏游戏吧，冰到你脑壳穿棉袄啊，阿宅！
4·Replaced the AC filter, applied pest control spay, replaced fire alarm batteries, etc.
——换了空调过滤网，喷了杀虫药，给火灾报警器换了电池，等等。
5·Handled basic household maintenance. - replaced the ac filter, applied pest control spay, replaced fire alarm batteries, etc.
完成了家里一些基本的维修工作。——换了空调过滤网，喷了杀虫药，给火灾报警器换了电池，等等。