Size and weight are still key, and a small, lightweightvehicle is going to fare worse than a big, heavy vehicle in a crash.
尺寸和重量仍然是关键，和一个小，重量轻的车辆将票价比一个大，重型车辆在碰撞更糟。
2
The Swarming Micro Air Vehicle Network (SMAVNET) project comprises of robust, lightweight robots and software that allows the devices to wirelessly communicate with each other.
集群式的微型空中飞行器网络由耐用的轻质飞行器和软件组成。 设备间可进行无线通信。
3
Everything else, including the motors, electronics and the lightweight foam that buoys the vehicle, is housed outside the hulls in the fuselages, saving weight.