close up pan from flat screen monitor to sample carousel being placed in pcr device - 玻璃毛細管 個影片檔及 b 捲影像00:21
close up side view of technician dropping glass capillary into sample holder / flat screen monitor in background - 玻璃毛細管 個影片檔及 b 捲影像00:11
close up graph on flat screen monitor / rack focus glass capillary being placed in sample carousel of pcr device - 玻璃毛細管 個影片檔及 b 捲影像00:09
1975 montage ms cu meteorlogist conducting experiment with rain droplets / united states / audio - 玻璃毛細管 個影片檔及 b 捲影像00:12
a chemistry teacher engages with two of her students as they perform an experiment. - 玻璃毛細管 個影片檔及 b 捲影像00:14
high school lab partners work together to record observations in their tablets. - 玻璃毛細管 個影片檔及 b 捲影像00:10
high school chemistry lab partners record observations and measurements in tablets. - 玻璃毛細管 個影片檔及 b 捲影像00:08
high school lab partners help each other record measurements from a burette. - 玻璃毛細管 個影片檔及 b 捲影像00:09
a high school chemistry students measure the meniscus in a burette and confirms with her lab partner. - 玻璃毛細管 個影片檔及 b 捲影像00:03
two high school lab partners measure the meniscus in a burette and take notes. - 玻璃毛細管 個影片檔及 b 捲影像00:07
high school students take measurement using burettes during chemistry class. - 玻璃毛細管 個影片檔及 b 捲影像00:11
a teacher helps a high school student with a chemistry experiment during lab class. - 玻璃毛細管 個影片檔及 b 捲影像00:08
a chemistry students drains liquid into a beaker and the reaction causes it to change color. - 玻璃毛細管 個影片檔及 b 捲影像00:19
a female high school student helps her lab partner understand the results of an experiment. - 玻璃毛細管 個影片檔及 b 捲影像00:10
two high school chemistry students give opinions on measurements for a burette. - 玻璃毛細管 個影片檔及 b 捲影像00:08
two high school chemistry lab partners discuss how to measure the meniscus in a burette. - 玻璃毛細管 個影片檔及 b 捲影像00:11
two high school chemistry lab partners laugh as they review their experiment notes. - 玻璃毛細管 個影片檔及 b 捲影像00:04
a high school student calculates the meniscus in a burette during chemistry lab. - 玻璃毛細管 個影片檔及 b 捲影像00:11
a female high school student secures a burette at her chemistry lab station. - 玻璃毛細管 個影片檔及 b 捲影像00:04
a female high school student secures a burette while her lab partner watches. - 玻璃毛細管 個影片檔及 b 捲影像00:05
laboratory centrifuge rotor supports science experiment with blue tube holder and clear test tube, precision equipment ready for clinical research, sterile testing, sample analysis and laboratory - 玻璃毛細管 個影片檔及 b 捲影像00:09
laboratory science experiment using centrifuge equipment with blue tube holder, metal rotor, blood sample tubes, gloved hand, sterile preparation, sample separation, biomedical research - 玻璃毛細管 個影片檔及 b 捲影像00:09
laboratory science experiment with yellow orange red liquid graduated glass beaker, measured volume markings and laboratory equipment for chemistry research education with dramatic contrast - 玻璃毛細管 個影片檔及 b 捲影像00:10
laboratory science experiment with amber liquid in glass beaker, gloved researcher in protective coat conducting careful chemical analysis and research procedure - 玻璃毛細管 個影片檔及 b 捲影像00:09
laboratory science experiment with eyeglass frame stainless steel sterilization tray and metal wire rack, supporting precise optical research, clinical equipment maintenance, and vision study - 玻璃毛細管 個影片檔及 b 捲影像00:09
laboratory science experiment with scientist wearing protective gloves and lab coat pouring red liquid between glass beakers and flasks during careful chemistry research in clean laboratory workspace - 玻璃毛細管 個影片檔及 b 捲影像00:08
female scientist looking through microscope in laboratory. scientific research, laboratory analysis, medical discovery, biotechnology - 玻璃毛細管 個影片檔及 b 捲影像00:14
female scientist looking through microscope in laboratory. scientific research, laboratory analysis, medical discovery, biotechnology - 玻璃毛細管 個影片檔及 b 捲影像00:15
female scientist looking through microscope in laboratory. scientific research, laboratory analysis, medical discovery, biotechnology - 玻璃毛細管 個影片檔及 b 捲影像00:11
female scientist looking through microscope in laboratory. scientific research, laboratory analysis, medical discovery, biotechnology - 玻璃毛細管 個影片檔及 b 捲影像00:15
female scientist looking through microscope in laboratory. scientific research, laboratory analysis, medical discovery, biotechnology - 玻璃毛細管 個影片檔及 b 捲影像00:15
close up pipetting liquid solution onto microscope glass slide detailed close-up shot of a scientist using a pipette dropper to drop liquid solution onto a microscope glass slide for testing. - 玻璃毛細管 個影片檔及 b 捲影像00:19
female scientist looking through microscope in laboratory. scientific research, laboratory analysis, medical discovery, biotechnology - 玻璃毛細管 個影片檔及 b 捲影像00:16
female scientist looking through microscope in laboratory. scientific research, laboratory analysis, medical discovery, biotechnology - 玻璃毛細管 個影片檔及 b 捲影像00:10
female scientist looking through microscope in laboratory. scientific research, laboratory analysis, medical discovery, biotechnology - 玻璃毛細管 個影片檔及 b 捲影像00:10
female scientist looking through microscope in laboratory. scientific research, laboratory analysis, medical discovery, biotechnology - 玻璃毛細管 個影片檔及 b 捲影像00:16
close up pipetting liquid solution onto microscope glass slide detailed close-up shot of a scientist using a pipette dropper to drop liquid solution onto a microscope glass slide for testing. - 玻璃毛細管 個影片檔及 b 捲影像00:18
close up pipetting liquid solution onto microscope glass slide detailed close-up shot of a scientist using a pipette dropper to drop liquid solution onto a microscope glass slide for testing. - 玻璃毛細管 個影片檔及 b 捲影像00:15
female scientist looking through microscope in laboratory. scientific research, laboratory analysis, medical discovery, biotechnology - 玻璃毛細管 個影片檔及 b 捲影像00:15
female scientist looking through microscope in laboratory. scientific research, laboratory analysis, medical discovery, biotechnology - 玻璃毛細管 個影片檔及 b 捲影像00:12
female scientist looking through microscope in laboratory. scientific research, laboratory analysis, medical discovery, biotechnology - 玻璃毛細管 個影片檔及 b 捲影像00:14
close up hand holding erlenmeyer flask with chemical solution next to microscope - 玻璃毛細管 個影片檔及 b 捲影像00:16