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A kind of working method of aluminium alloy extrusions cutting equipment
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A kind of sandstone screening plant for building
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A kind of constant current source generating circuit of high stability
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A kind of low-temperature coefficient generating circuit from reference voltage and electronic device
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A kind of cable arrange-line device of the electric appliance convenient for arranging
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A kind of liftable heat radiating type gardens LED street lamp
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A kind of LDO circuit applied to integrated chip
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