无线电波的传播速度同光速一样,假设这个自动信使（指无线电波）获得了1920年代我们的首次播音（的信号）,这个消息也就仅仅走到了距其所属的星球一半的路程.
这应该是介绍某个行星距地球的距离所举的例子吧.希望能够帮到你.
帮忙翻译一句英文Radio waves also travel at the speed of light,and as
4个回答
相关问题
-
连词成句（英语——初一）second、speed、a、of、300,000km、light、per、travels、at
-
1.One of the properties of light is ____traveling in wave fr
-
英语翻译Light travels at a speed which is about a million times
-
英语翻译Wave speed in a mediumThe speed of a mechanical wave is
-
lighting,TV and the radio present the same proportion as do
-
英语翻译一、填空1.The light______at a speed of 300.000 km per hourA、
-
the computer works very fast, ___ data at the speed of light
-
The computer works very fast,_ data at the speed of light.
-
the computer,woring very fast ,_data at the speed of light A
-
Light travels at a speed which is about a million times fast