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 - 化學公式 個影片檔及 b 捲影像00:08
abstract organic sphere with cells on background. futuristic science or technology concept. 3d rendering - 化學公式 個影片檔及 b 捲影像00:10黑色, 粒子
animation of two chemists in adjoining labs competing to be the first to create successful formula for hosiery / audio - 化學公式 個影片檔及 b 捲影像00:23
floating cells in blue background, skin treatment, biology and medicine concept - 化學公式 個影片檔及 b 捲影像00:10
graphics showing the structural formula of sex hormones. starts with progesterone and moves onto also showing oestrogen and another sex hormone. they... - 化學公式 個影片檔及 b 捲影像00:21
view through transparent board of hand writing chemical equation on board - 化學公式 個影片檔及 b 捲影像00:17數學符號
close up of a researcher using a mechanical stirrer in a beaker with oil and additives. mixing synthetic lubricant formulations with a laboratory overhead stirrer for chemical research in an industrial facility. - 化學公式 個影片檔及 b 捲影像00:15
science background with molecule or atom, bio technology concept, 3d animation - 化學公式 個影片檔及 b 捲影像00:12
floating cells in white background, skin treatment, biology and medicine concept - 化學公式 個影片檔及 b 捲影像00:10
molecular structure visualization showcasing intricate design and vibrant colors with an abstract background. 3d animation - 化學公式 個影片檔及 b 捲影像00:08
scientist biologist checking on grower quality of cannabis plants, leaves and flowers in marijuana weed farm - 化學公式 個影片檔及 b 捲影像00:06
woman, thinking and writing on glass for science, problem solving or brainstorming in lab. medical scientist, molecular compound and chemistry on board for insulin development or medicine engineering - 化學公式 個影片檔及 b 捲影像00:15女人
explaining matter: chemical change - part 9 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 - 化學公式 個影片檔及 b 捲影像00:30
explaining matter: chemical change - part 5 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 - 化學公式 個影片檔及 b 捲影像00:34