Brewing unit, mill for grinding grain:
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Lathe turning on, stop, work
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Start, shutdown, run, Compressor
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Industrial exhaust fan
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Air compressor turn on, turn off
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Power station generator
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Forklift truck moving away
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Work in a warehouse, loaders, general noise
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Book press
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Power station turbine
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Box making machine
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Low frequency running engine
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Electric industrial motor
★★★★★