以下为句子列表：
英文: First-generation computers were characterized by the use of vacuum tubes as their principal electronic component.
中文: 第一代计算机的特色是使用真空管为其主要电子器件。
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英文: Four Russian EH6922 vacuum tubes with gold plated pins for output amplification.
中文: 四枝俄罗斯EH6922镀金脚电子管作为输出放大。
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英文: The first electronic computers used vacuum tubes and other components, and this made equipment very large and bulky.
中文: 第一批电子计算机使用真空管和其他元件，这是设备变得十分庞大。
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英文: The principal functions that may be performed by vacuum tubes are rectification, amplification, oscillation, modulation, and detection.
中文: 真空管的五大主要功能是：整流、放大、振荡、调制和检波。
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英文: Vacuum tubes are bulky and produce a lot of heat, so first-generation computers were large and required extensive air conditioning to keep them cool.
中文: 真空管体积大且发热严重,因此第一代计算机体积庞大，并且需要大量的空调设备保持冷却。
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