白い実験室で赤い液体の濃度を試験管で比較する写真
Schlüsselwörter
test tube,
liquid,
red,
concentration,
experiment,
study,
white,
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photo,
chemistry,
inspection,
analysis,
gradation,
transparent,
glasses,
medical care,
science,
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light,
reflex,
reagent,
sample,
comparative,
measurement,
stage,
training,
datum,
precise,
background,
diagnostic,
laboratory,
future,
technology,
health care,
material
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