真空电子管也要求以直流电压为电源。
冯·诺依曼从数量上比较了大脑神经元和真空电子管的运算速度，大胆暗示两者可以类比。
Von Neumann quantitatively compared the speed of brain neurons and the speed of vacuum tubes, boldly implying the two could be compared.
它在吉他功放里的广泛应用使得它成为少数的、能得以持续生产制造的小讯号真空电子管。
Its wide use in guitar amplifiers has caused it to be one of the very few small-signal vacuum tubes to continue in production since it was introduced.
具有讽刺意味的是，一些困扰真空电子管并导致其接近死亡的问题，现在在晶体管产品中却挥之不去。
Ironically, some of the problems that plagued vacuum tubes and lead to their near-demise now haunt transistorized products.
多数电子管是真空的。
真空管是一种内部气体全部或部分抽空的电子管，从而使电子在不受或少受气体分子的干扰下运动。
The vacuum tube is an electron tube from which all or most of the gas has been removed, permitting electrons to move with no or low interaction with any remaining gas molecules.
电子管通常用来放大，而真空管则是电子管的另一名称。
An electron tube is generally used for amplification, and vacuum tube is another term for this device.
电子管或真空管。
电子管或真空管。
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