4K Scientist using smartphone while drawing chemical formula on whiteboard male scientist in a white lab coat using smartphone while 股票视频 Scientist using smartphone while drawing chemical formula on whiteboard male scientist in a white lab coat using smartphone while 股票视频
4K Female scientist in lab placing slide and adjusting focus analyzing sample with chemical diagrams research laboratory scientific 股票视频 Female scientist in lab placing slide and adjusting focus analyzing sample with chemical diagrams research laboratory scientific 股票视频
4K Scientist analyzing a test tube using blue liquid chemical liquid test tube laboratory research experiment dedicated to chemical 影视素材 Scientist analyzing a test tube using blue liquid chemical liquid test tube laboratory research experiment dedicated to chemical 影视素材
4K Scientist holding brain model with chemical formulas and data overlay animation scientist holding brain model with chemical 股票录像 Scientist holding brain model with chemical formulas and data overlay animation scientist holding brain model with chemical 股票录像
4K 科学家、团队和化学分子，配备平板电脑，用于化学、测试和医学研究。生物技术、实验室和人员进行DNA检查，用于病理实验、讨论或微生物学。 股票录像 科学家、团队和化学分子，配备平板电脑，用于化学、测试和医学研究。生物技术、实验室和人员进行DNA检查，用于病理实验、讨论或微生物学。 股票录像
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