a hand in protective glove puts a petri dish with colorful nutrient agar on a white illuminated table with a lot of colorful petri dishes - 實驗室玻璃器具 個影片檔及 b 捲影像00:07細菌
science, pipette and test tube in laboratory for research, medical innovation and chemistry experiment. woman, hands and healthcare development for dna sample analysis, microbiome or biotechnology - 實驗室玻璃器具 個影片檔及 b 捲影像00:10
liquid drops are falling from the pipette. essential oil made in the laboratory for natural organic skincare, - 實驗室玻璃器具 個影片檔及 b 捲影像00:15
scientist hands in gloves hold sterile flask with yellow liquid. oil research and toxic liquid concept - 實驗室玻璃器具 個影片檔及 b 捲影像00:32
modern research laboratory workstation. female scientist working on a computer. researching genetic diseases - 實驗室玻璃器具 個影片檔及 b 捲影像00:08
female scientist works in chemical lab on march 07, 2018 in beijing, china. - 實驗室玻璃器具 個影片檔及 b 捲影像00:15
female hand arranging test tubes in holder, female adding material to tube, dolly back female & male working in lab. intelligence: vs girl writing... - 實驗室玻璃器具 個影片檔及 b 捲影像00:44數學符號
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 - 實驗室玻璃器具 個影片檔及 b 捲影像00:30
liquid flows down hose / glass condenser coils with liquid / gas bubbles rise in glass column / instrument attached to top of calibrated tube /... - 實驗室玻璃器具 個影片檔及 b 捲影像00:46
visit to a technical college using models and closed circuit television to display experiments in england / united kingdom - 實驗室玻璃器具 個影片檔及 b 捲影像00:53
research and experiments conducted in chemistry and medicine in midlands / united kingdom - 實驗室玻璃器具 個影片檔及 b 捲影像01:17
soil inside rothamsted research laboratory in hertfordshire / united kingdom - 實驗室玻璃器具 個影片檔及 b 捲影像00:46
laboratory showing scientists testing the desalination of water in scotland / united kingdom - 實驗室玻璃器具 個影片檔及 b 捲影像00:33
research students in lab conducting experiments with palm oil in london / united kingdom - 實驗室玻璃器具 個影片檔及 b 捲影像00:34
research students in a lab demonstrating to visitors from thailand in london / united kingdom - 實驗室玻璃器具 個影片檔及 b 捲影像00:29
professor stapleton bumblebee performs experiment with bumblebees in test tubes and flowers / aberystwyth, wales - 實驗室玻璃器具 個影片檔及 b 捲影像00:42
lab technician places agar plate with bacteria in incubator to demonstrate result / united kingdom - 實驗室玻璃器具 個影片檔及 b 捲影像01:00
lab technician testing bacteria in test tubes and on agar plates / united kingdom - 實驗室玻璃器具 個影片檔及 b 捲影像00:59
lab technician studying bacteria from a colony on a slide / united kingdom - 實驗室玻璃器具 個影片檔及 b 捲影像01:38
scientist in a lab studying effects of tar from cigarette smoking / united kingdom - 實驗室玻璃器具 個影片檔及 b 捲影像00:23
lab technician testing soil samples in beakers with an electrode and digital computer / england, united kingdom - 實驗室玻璃器具 個影片檔及 b 捲影像00:34
officer candidates chemically testing boiler water in a laboratory and attending a turbine lecture at the maritime service officers' school /... - 實驗室玻璃器具 個影片檔及 b 捲影像00:56
patient having his finger pricked and wiped with cotton ball, and doctor adjusting microscope and looking through it at a u.s. army field hospital /... - 實驗室玻璃器具 個影片檔及 b 捲影像00:32
army medical orderly opening container and removing glass bottle of clear liquid / okinawa, japan - 實驗室玻璃器具 個影片檔及 b 捲影像00:23
zi a scientist with three tiny deer ticks on his hand / new haven, connecticut, united states - 實驗室玻璃器具 個影片檔及 b 捲影像00:31
zi a scientist placing deer ticks on his hand / new haven, connecticut, united states - 實驗室玻璃器具 個影片檔及 b 捲影像00:20
ecu a researcher holding a test tube against his skin so a captured mosquito will bite him / dakar, senegal - 實驗室玻璃器具 個影片檔及 b 捲影像00:21
cu a researcher holding a test tube against his skin so a captured mosquito will bite him / dakar, senegal - 實驗室玻璃器具 個影片檔及 b 捲影像00:20
october 17, 2008 museum worker opening a cold storage container, inspecting vials, then closing container / washington, d.c., united states - 實驗室玻璃器具 個影片檔及 b 捲影像01:12
october 17, 2008 robotic testing device performing forensic specimen analysis testing in laboratory at smithsonian institution / washington, d.c.,... - 實驗室玻璃器具 個影片檔及 b 捲影像00:53
cu blood sample being taken from a child's fingertip at a clinic / thies, senegal - 實驗室玻璃器具 個影片檔及 b 捲影像01:06
cu blood samples being analyzed after collection in a health clinic / thies, senegal - 實驗室玻璃器具 個影片檔及 b 捲影像00:19
zi researcher holding shark upside down and another using syringe to draw blood sample, aboard a trawler on the ocean - 實驗室玻璃器具 個影片檔及 b 捲影像00:31女人
scientists heating fluidized coal and drawing it into a glass container / united kingdom - 實驗室玻璃器具 個影片檔及 b 捲影像00:36
technician replacing water condenser with air condenser using glove boxes / united kingdom - 實驗室玻璃器具 個影片檔及 b 捲影像00:11
scientist measuring liquids and medication bottles rolling through a factory assembly line / united kingdom - 實驗室玻璃器具 個影片檔及 b 捲影像00:06
national blood transfusion service nurses and technicians testing a donor's blood / united kingdom - 實驗室玻璃器具 個影片檔及 b 捲影像00:15
1958 montage scientist placing beakers containing bean seedling parts into radioactivity measurement chamber / united states - 實驗室玻璃器具 個影片檔及 b 捲影像00:19
may 27, 1963 ms scientist examines chemicals in a laboratory / united states - 實驗室玻璃器具 個影片檔及 b 捲影像00:16
1930s montage men in lab handle dust in hands before pouring beaker of liquid onto the contents / washington, d.c., united states - 實驗室玻璃器具 個影片檔及 b 捲影像00:38
1923 montage man looking in microscope with his hand moving slide under the lens / united states - 實驗室玻璃器具 個影片檔及 b 捲影像00:12
1936 cu scientist testing yeast under a microscope at anheuser busch brewery in st. louis / missouri, united states - 實驗室玻璃器具 個影片檔及 b 捲影像00:10
1936 b/w brewing beer with science at anheuser busch brewery in st. louis / missouri, united states - 實驗室玻璃器具 個影片檔及 b 捲影像00:09
1946 ms laboratory technicians working with microscopes and beakers / united states - 實驗室玻璃器具 個影片檔及 b 捲影像00:08
1980 scientist looks at plant materials with microscope in laboratory / usa - 實驗室玻璃器具 個影片檔及 b 捲影像00:10
1978 montage transforming powdered coal into liquid fuel in the laboratory - 實驗室玻璃器具 個影片檔及 b 捲影像00:08
george washington carver with assistant conducting experiments in laboratory / carver examining lab vial - 實驗室玻璃器具 個影片檔及 b 捲影像00:04
extreme close-up pan right across test tubes filled with colorful liquids. - 實驗室玻璃器具 個影片檔及 b 捲影像00:45