... lvanometer 电流计，检电流计 galvanometer amplifier 检流计放大器 galvanometer oscillograph 检流计示波器 ...
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用差动放大器对轴承式检流计进行改造，使之具有灵敏度高、不易损坏、可直立放置等优点。
A bearing galvanometer is modified using a differential amplifier. It has the advantage of high sensitivity and is less likely to damage and able to be put upright.
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