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DDT mix standard 农药
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Demeton O standard 农药
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Didecyldimethylammonium chloride standard 农药
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Dinoseb acetate standard 农药
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Organochlorine pesticides standard 农药
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Organophosphorus pesticides standard 农药
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Pesticides individual standard 农药
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Pesticides spiking standard 农药
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Pesticides standard kit 农药
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Carbon tetrachloride standard 农药
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