upcast

1. 1.

   To cast from subtype to supertype.

   从子类型转换为超类型

2. 2.

   To broadcast a message or data to aircraft or satellites, especially via radio waves; as opposed to uplinking to a specific satellite or aircraft

   向飞机或卫星广播消息或数据,尤指通过无线电波；区别于上行链接至特定卫星或飞机。

向飞机或卫星广播消息或数据,尤指通过无线电波；区别于上行链接至特定卫星或飞机。

Connections

Learner notes