他们测试了这台发射机的发射范围.They tested the range of this transmitter.只要在发射机中存在调制信号, 就含有旁频带出现.When there is a modulated signal from transmitter, there are side bands.他们住在无线电发射机的有效范围以内.They live within range of the transmitter....

“发射机”的拼音为：fā shè jī...

“发射机”的英语可以翻译为：transmitter，sender，sending set，X-mitter ...