VA? Voltage Amplifier?

电压放大器?。

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Traditionally, each channel needs a high-voltage amplifier.

传统上，每通道需要一个高压放大器。

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The grinding temperature is obtained online using thermoelectric couple, voltage amplifier, A/D card and data collection software.

利用铁-康铜热电偶丝、电压放大器、A/D板通过半人工热电偶测温方法在线采集磨削温度；

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In order to fully exploit the sound potential of the HDVD 800 with any audio source, a rotary gain switch at the rear of the unit provides simple adaptation of the amplifier output to the audio input voltage.

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The 8X motherboard sports an increased voltage of 1.5V, and a second amplifier delivers over 2.5V to the 3.5mm headphone jack.

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