They tested the range of this transmitter.他們測試了這臺發射機的發射范圍。
英英詞典釋義
Noun
1. someone who transmits a message;
"return to sender"
2. any agent (person or animal or microorganism) that carries and transmits a disease;
"mosquitos are vectors of malaria and yellow fever""fleas are vectors of the plague""aphids are transmitters of plant diseases""when medical scientists talk about vectors they are usually talking about insects"