- npn-photo
- 感光: sensitization; photoreceptio ...
- 三极管: triode; audion; radiotron; t ...
- 三极管: [电学] [无线电] triode; audion; radiotron; three-electrode valve; three-electrode tube 充气三极管 gasfilled triode; 晶体三极管 transistor
- 三极管-五极管: triode-pentode
- npn三极管: npn dar
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