“communication signals”可以造什么句，communication signals造句
来源：语文精选馆 3.14W
An English science-fiction writer, proposed that meaned "stationary" satellites be used to relay and broadcast electromagnetic communication signals.
The method of extracting instantaneous characters of communication signals is studied.
The newly born celestial hand has no weapons and nothing. Only a laser transmitter can be used to send communication signals.
