真空管放大器 meaning in English

vacuum tube amplifier
vacuum-tube amplifier

Vacuum tube amplifiers used the first time in coast - to - coast telco circuits
真空管放大器首次用于大西洋岸至太平洋岸的电信电路中。
As for the tv transmitter of uhf of which the power grade is above 10kw , the valve power amplifier such as the electron tube , klystron and iot are widely adopted in high - frequency linear power amplifier
功率等级在10kw以上的uhf (特高频)电视发射机，其高频线性功率放大器普遍采用电子管、速调管、感应输出管( iot )等电真空管放大器件。