The second reason is that it is difficult to make these circuit voltage controllable over a large frequency range.
第二个理由是很难做到将这些电路的电压控制在一个很大的频率范围内。
2
The first pre-decoding switch array is used for receiving the digital data, and pre-decoding the partial digital data and outputting the voltage when the digital data are within a secondrange.
第一预 解码开关阵列用以接收数字数据，当数字数据在一第二范围内时预解码部 份数字数据以及输出电压。
3
The second pre-decoding switch array is used for receiving the digital data, and pre-decoding the partial digital data and outputting the voltage when the digital data are within a third range.