Everything about it screams performance – its graphics, radical fenders and aggressive stance – and it's not afraid to back it up with some power. 一切关于它的尖叫声的表现-它的图形,激进的护舷和侵略性的立场-它不惧怕将它备份起来,与一些权力。
Could it be that the elevators have a back up power system? 有没有可能电梯有后备的电力系统?
Application of Automatic Back-up Power Supply Device in Metro 备用电源自投装置在地铁供电系统的应用
Study of back-up protection configuration schemes in power market environment 市场环境下后备保护配置方法的选择