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spot beam
spot blight
spot blotch
spot board
spot broadcasting
spot broker
spot burning
spot carbon
spot cargo
spot cash
spot charts
spot check
spot checker
spot chromatography
spot cleaner
spot collector
spot colorimetry
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spot contract
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spot cotton
spot cure
spot curer
spot deal
spot definition
spot delivery
spot desmosome
spot diameter
spot displacement

 spot beam
点波束


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