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purple and blue paint or dye dropped into water against white background to create swirling colourful smoke background 4
color change with lime juice and pea flower
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test tubes with samples in a rack 4k
吸入空氣 進去科學小瓶子
makeup palette and face paints
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experiment with butterfly pea flower and chemicals
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chocolatier pouring ganache filling into chocolate mold preparing candy with a pastry bag
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observing color changes with ph indicator solution
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scientist pours liquid, colors change in sequence
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observing color change with ph variations
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dental technician preparing for work
observing color changes with different ph solutions
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chemists drips reagent into test tube with yellow liquid
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overhead shot of droplet of blue paint or dye dropped into water against white background to create swirling colourful pattern
animation of dna strand over biracial male scientist in laboratory
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通過 pipette 的方法,在實驗室中進行 pbs 緩衝溶液的測試
chemistry experiment with liquid color changes
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nail technician shows the color palette of nail services in beauty salon.
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通過 pipette 的方法,在實驗室中使用 pps 緩衝溶液
mixing dark green and yellow paints in test tube on rack
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scientist hand writing on test beakers
laboratory glassware with blood
一位女士用勺子填充奶酪蛋糕奶油,填充迷你蛋糕持有者,坐在蛋糕<unk>中,制作蛋糕杯
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color changes in liquids using ph indicators
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observing color changes with ph variations
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observing color changes with different ph solutions
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observing color changes with ph variations
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experiment with various solutions and color changes
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lab glassware with blood sample
pharmacist putting pills on the counter
塑料瓶盖的塑料加工和回收工业 5
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overhead shot of droplet of blue paint or dye dropped into water against white background to create swirling colourful pattern
準備顯微鏡滑板 (cu) 的方法
科学家将样品倒入杯子中
scientist transferring blue liquid in a beaker
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scientist handling petri dishes in a lab
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colorful chemical reaction in a test tube
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painting with water color watercolor
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用手套和口罩的专业医生手里拿着医疗注射器,准备注射
medical ampoules on drug manufacturing line
laboratory worker preparing experiment at lab
chemical reactions with various solutions and indicators
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scientist holding a test tube with a blue liquid
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在臉上畫驕傲旗<unk>
color change with different ph solutions
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追蹤從驕傲的旗<br > 在手上
dripping reagent into test tube under lab assistant control
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analysis of the ph and chlorine with cleaner kit of the water of swimming pool
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將樣本注入試管中
robotic arm
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