Laboratory glassware containing chemical liquid, close-up of hands

science, chemistry, biology, medicine and people concept - close up of scientist hand pouring chemical powder into flask making test or research in clinical laboratory

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圖片庫的science, chemistry, biology, medicine and people concept - close up of scientist hand pouring chemical powder into flask making test or research in clinical laboratory 圖片 Image 58317418.

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science, chemistry, biology, medicine and people concept - close up of scientist hand pouring chemical powder into flask making test or research in clinical laboratory

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