The transistor will do most of the things a triode tube will do. 晶體管能起三極體所能起的大部分作用。
The phototransistor was installed through holes in the top of the case, and enclosed in a brass tube that was painted black inside and out. 該光敏三極體是通過安裝在洞上方的情況下，密封在一個黃銅管，這是手繪的黑色內。
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