Virtual Circuit Packet Switching 的工作原理是什么

Virtual Circuit Packet Switching 的工作原理是什么 circuit circuit Virtual virtual pack forward circuit fesitival circuit crossed circuit Circuit Trainer virtual techology 什么是Virtual 寻找英文高手帮忙翻译the system sees a low resistance in the capacitor and much higher resistance in the battery pack, which contains battery in series connection with a protective circuit module (PCM). pack up fanny pack pack her pack his pack my