HD In school laboratory hand holding test tubes with animation of european map stars science research experiment chemistry innovation 股票录像 In school laboratory hand holding test tubes with animation of european map stars science research experiment chemistry innovation 股票录像
4K Medic hand holds erlenmeyer flask with yellow liquid sample woman medic hand holds erlenmeyer flask with yellow liquid sample in 影视素材 Medic hand holds erlenmeyer flask with yellow liquid sample woman medic hand holds erlenmeyer flask with yellow liquid sample in 影视素材
4K Woman in blue gloves looks through eyepiece of microscope while holding glass slide hand doctor conducts scientific laboratory 股票录像 Woman in blue gloves looks through eyepiece of microscope while holding glass slide hand doctor conducts scientific laboratory 股票录像
4K Scientist holds molecular structure model on laboratory table hand chemist in protective gear conducts experiments with fluids 股票录像 Scientist holds molecular structure model on laboratory table hand chemist in protective gear conducts experiments with fluids 股票录像
4K Assistant hand drips serum onto microscope slide in medical lab female cosmetologist works on antiaging cosmetic product 影视素材 Assistant hand drips serum onto microscope slide in medical lab female cosmetologist works on antiaging cosmetic product 影视素材
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