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Method for determination of ammonia concentration
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Penetrometer
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Device for measuring moment of resistance on a.c.driving motor shaft
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Single pulse shaper
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Electrostatic electroacoustic transducer
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FI783458A
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Device for measuring loose material consumption
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Vibration level detector for school and viscose gueter
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Electrostatic converter
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Device for regulating signal level in two-channel ultrasonic devices
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Device for automatic measuring physico=chemical parameters of media
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Method of automatic regulating of solution concentration
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Device for indicating equivalent point at potentiometric titration
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