n.三重奏，三人一组，三重奏[三重唱]乐曲，（小步舞曲、谐谑曲等的）中段
The triode steps up voltage.
三极管能升高电压.
It is the equivalent circuit of a triode amplifier circuit.
它是三极管放大器的等效电路.
U 4 triode connected: Medium MU small mass filamentary heating structure.
三极管接法): 中Mu小型灯丝结构.
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