cu selective focus lab technician's hand picking up beaker of blue fluid / berlin, germany - 試管架 個影片檔及 b 捲影像00:14
cu selective focus lab technician's hand picking up beaker of red fluid and compare with color sample / berlin, germany - 試管架 個影片檔及 b 捲影像00:14
ms lab technician holding clipboard and picking up beaker of blue fluid in laboratory, mid section / berlin, germany - 試管架 個影片檔及 b 捲影像00:18
cu r/f rack of vials containing blood in laboratory, male lab technician working in the background / berlin, germany - 試管架 個影片檔及 b 捲影像00:22
cu rack of vials containing blood in laboratory, male lab technician working in the background / berlin, germany - 試管架 個影片檔及 b 捲影像00:20
operations inside bayer ag's cropscience processing facility in monheim, germany, on wednesday, march 21, 2018. - 試管架 個影片檔及 b 捲影像00:46
cu tu selective focus person removing solution with pipette and inserting it into container with liquid in laboratory, new jersey, usa - 試管架 個影片檔及 b 捲影像00:14
cu zo ms ha scientist filling plastic trays with liquid in laboratory, new jersey, usa - 試管架 個影片檔及 b 捲影像00:06
ms ha scientist filling plastic trays with liquid in laboratory, new jersey, usa - 試管架 個影片檔及 b 捲影像00:08
cu pan scientist putting solution in test tubes in laboratory, new jersey, usa - 試管架 個影片檔及 b 捲影像00:06
medium shot forensic scientist applying acid to gun with cotton swab to reveal defaced serial number/ dearborn, michigan - 試管架 個影片檔及 b 捲影像00:04
ms pan zi professor explaining samples to science students in laboratory / delhi, india - 試管架 個影片檔及 b 捲影像00:15
ms pan professor pouring chemicals in multiwell plate at laboratory / delhi, india - 試管架 個影片檔及 b 捲影像00:11
ms pan zi science student examining molecular structure in laboratory / delhi, india - 試管架 個影片檔及 b 捲影像00:16
ms professor explaining samples to science students in laboratory / delhi, india - 試管架 個影片檔及 b 捲影像00:20
ms professor explaining students about microscope in laboratory / delhi, india - 試管架 個影片檔及 b 捲影像00:18
ms science students examining chemicals and writing on clipboard in laboratory / delhi, india - 試管架 個影片檔及 b 捲影像00:26
ms science students examining chemicals and writing on clipboard in laboratory / delhi, india - 試管架 個影片檔及 b 捲影像00:16
ms science students examining chemicals and writing on clipboard in laboratory / delhi, india - 試管架 個影片檔及 b 捲影像00:12
ms science students examining chemicals in petri dish at laboratory / delhi, india - 試管架 個影片檔及 b 捲影像00:26
ms zi professor explaining student about chemical reaction with the help of pipette and petri dish in laboratory / delhi, india - 試管架 個影片檔及 b 捲影像00:24印度人
ms pan professor explaining students about chemicals in laboratory / delhi, india - 試管架 個影片檔及 b 捲影像00:32
ms pan science students examining chemicals in flask at laboratory / delhi, india - 試管架 個影片檔及 b 捲影像00:18
ms pan science students examining chemicals and using digital tablet in laboratory / delhi, india - 試管架 個影片檔及 b 捲影像00:17
ms pan science students examining chemicals and using digital tablet in laboratory / delhi, india - 試管架 個影片檔及 b 捲影像00:10印度人
ms pan science students examining chemicals in test tube at laboratory / delhi, india - 試管架 個影片檔及 b 捲影像00:15
ms pan science students examining chemicals in test tube and using laptop at laboratory / delhi, india - 試管架 個影片檔及 b 捲影像00:14
ms pan science students examining chemicals in test tube at laboratory / delhi, india - 試管架 個影片檔及 b 捲影像00:22
ms pan science students examining chemicals in test tube, professor explaining in background / delhi, india - 試管架 個影片檔及 b 捲影像00:29
ms pan professor explaining students about chemicals in laboratory / delhi, india - 試管架 個影片檔及 b 捲影像00:14
ms pan professor explaining students about chemicals in laboratory / delhi, india - 試管架 個影片檔及 b 捲影像00:10
close up young boy blowing and marveling at dry ice emanating from red liquid in chemistry class - 試管架 個影片檔及 b 捲影像00:07
close up portrait of elementary school student with beaker giving off dry ice in chemistry class - 試管架 個影片檔及 b 捲影像00:03
close up boy pouring red liquid giving off dry ice into beaker in chemistry class - 試管架 個影片檔及 b 捲影像00:14
medium shot zoom in boy pouring red liquid giving off dry ice from one beaker into another in chemistry class - 試管架 個影片檔及 b 捲影像00:30
medium shot girl transferring drops from beaker into test tube in chemistry lab/ pouring liquid into cylinder - 試管架 個影片檔及 b 捲影像00:39