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Current collector
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Solar-energy heat sypply system
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Compressor unit
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Water sampler
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Current-collecting device
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Transition between coaxial line and two-wire line with flat conductors
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Installation for convection drying of flat articles
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Sun energy construction complex
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Lift valve
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Heat generator
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Room with natural lighting and ventilation
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Solar heat supply system
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Solar heat supply system
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Gas-expansion machine
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Solar energy concentrator collapsible frame
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Heat-generating plant
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Solar water preheater
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