scientist hands in gloves hold sterile flask with yellow liquid. oil research and toxic liquid concept - 化學 個影片檔及 b 捲影像00:32
women, science and employees in laboratory, talking or innovation for healthcare, discussion and technology. female researchers, coworkers or scientists in lab, data analytics or medicine development - 化學 個影片檔及 b 捲影像00:30
engineer worker in ppe suite quality control automated manufacturing medical mask prevention coronavirus. - 化學 個影片檔及 b 捲影像00:14
female supervisor talking with an employee about a batch of chemical drums they produced at the factory - 化學 個影片檔及 b 捲影像00:19
asian woman inspection engineers working with laptop of oil factory and gas refinery plant industry at night for inspector safety quality control. - 化學 個影片檔及 b 捲影像00:11
dropper placing a liquids sample substance droplet on a microscope and microscope glass slide - 化學 個影片檔及 b 捲影像00:12
a chemistry students drains liquid into a beaker and the reaction causes it to change color. - 化學 個影片檔及 b 捲影像00:19
4k female student wearing safety goggles studying a molecular model in library. - 化學 個影片檔及 b 捲影像00:10學生
latin american man supervising the operation of a chemical plant and taking notes on a clipboard - 化學 個影片檔及 b 捲影像00:11貨倉
male chemist operating gc auto-samplers for sample analysis with main computer. integration of advanced technology and scientific expertise in modern chemical research. - 化學 個影片檔及 b 捲影像00:09
petrochemical and power plant gas industry with blue lines particles motion graphics design illustrate energy . - 化學 個影片檔及 b 捲影像00:15
medical, microscope and black woman in laboratory at night for analysis, research and science. healthcare, pharmaceutical and scientist with equipment for sample, experiment and vaccine development - 化學 個影片檔及 b 捲影像00:09注射疫苗
woman, thinking and writing on glass for chemistry, problem solving or brainstorming in lab. medical scientist, molecular compound and formula on board for insulin development or medicine engineering - 化學 個影片檔及 b 捲影像00:08
inspection engineers working with laptop of gas refinery plant and refinery oil factory industry at night to inspect the factory production quality, research and development concept of energy production - 化學 個影片檔及 b 捲影像00:13
future scanning test on a digital screen. futuristic scanning of a sample in a petri dish - 化學 個影片檔及 b 捲影像00:08
close up and slow motion of overhead view of pouring cosmetic golden yellow colored oil into a pool of water and filling up the frame with floating oil drops against a back lit background - 化學 個影片檔及 b 捲影像01:00
food scientist, nutritionist or quality control officer wear a hair net and sterile clothing. check the quality of beverage products in the production line - 化學 個影片檔及 b 捲影像00:19
science, test and woman with pipette in lab, sample and liquid in glass tube for experiment research. medical, study and scientist with analysis of vaccine, biotechnology or development in laboratory - 化學 個影片檔及 b 捲影像00:07
explaining matter: chemical change - part 1 of 18. illustrates that a chemical change takes place when atoms from the molecules of two or more materials join to form molecules of entirely different materials. examples of changes include burning, digestion - 化學 個影片檔及 b 捲影像00:32
outdoor laboratory test quality of water at water treatment plant, close up water quality control staff and sciene sample water analyze the quality, industrial and environment - 化學 個影片檔及 b 捲影像00:15
smart factory concept:animated industry icons over an industrial plant. technological manufacturing plant concept. - 化學 個影片檔及 b 捲影像00:13
ws scientists working in lab and performing various experiments / united states - 化學 個影片檔及 b 捲影像00:06
team inspection engineers working with laptop of oil factory and gas refinery plant industry at night for inspector safety quality control. - 化學 個影片檔及 b 捲影像00:06
petrochemical and power plant gas industry with blue lines particles motion graphics . - 化學 個影片檔及 b 捲影像00:15
food scientist, nutritionist or quality control officer wear a hair net and sterile clothing. check the quality of beverage products in the production line - 化學 個影片檔及 b 捲影像00:20
science, test and woman with pipette in lab, sample and liquid in glass tube for experiment research. medical, study and scientist with analysis of vaccine, biotechnology or development in laboratory - 化學 個影片檔及 b 捲影像00:08
close up and super slow motion of a scientific scene with a lot of air bubbles sticking together like cells moving around inside a container with orange backlight - 化學 個影片檔及 b 捲影像00:26紅色