high input-impedance stage 中文意思是什麼
high input-impedance stage
解釋
高阻抗輸入級-
To achieve the high impedance required specially designed "electrometer" vacuum tubes, field effect transistor must be used in the input stage.
為適應高阻抗需要,儀器輸入電路中須用特殊設計的靜電計專用電子管、場效應晶體管。
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