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by SMT
100 images 17 classes
glass tubing iron clip large beaker(wasted solution) limestone nipper reagent bottle oblique(colorless solution) reagent bottle(colorless solution) rubber hose rubber plug small beaker(colorless solution) test tube rack test tube(colorless solution) test tube(empty) test tube(limestone) test tube(muddy solution) test tube(reaction) test tube(widthwise)
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