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Transversely magnetized vane instrument
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Biassed oscillator arrangement
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전자광학장치
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Transducer assembly providing pneumatic output proportional to electrical input signal
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Dual magnet electrical instrument
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具有无间隙支承的检流计驱动装置
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Magnetic speedometer
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Electrical measuring instrument
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Instrument bearings and instruments incorporating such bearings
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Electro-pneumatic current-to-position transducer
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Electromagnetic device.
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軸受け装置および現像装置
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Moving-coil electrical instruments
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一种悬丝式浮子支撑结构
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