differential type galvanometer
... differential twin-flowmeter 双管压差流量计 differential type galvanometer 差动式检流计 differential type relay 差动式继电器 ...
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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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