ms pan zi professor explaining samples to science students in laboratory / delhi, india - 培養皿 個影片檔及 b 捲影像00:15
ms professor explaining samples to science students in laboratory / delhi, india - 培養皿 個影片檔及 b 捲影像00:20
ms science students examining chemicals in petri dish at laboratory / delhi, india - 培養皿 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 - 培養皿 個影片檔及 b 捲影像00:24印度人
close-up of a petri dish containing roughly-cut diamonds being removed during scientific examination. - 培養皿 個影片檔及 b 捲影像00:10
1970s montage volunteers working in laboratory, los angeles, california, usa, audio - 培養皿 個影片檔及 b 捲影像00:43
close angle petri dishes on table. see glass tubes in rack, flasks and vials. see hand holding dropper deposit liquid onto plastic pregnancy indicator on top of petri dish. see hand remove indicator from dish. could be laboratory experiment. - 培養皿 個影片檔及 b 捲影像00:21
close angle petri dishes on table. see glass tubes in rack, flasks and vials. see hand holding dropper deposit liquid onto plastic pregnancy indicator on top of petri dish. see hand remove indicator from dish. could be laboratory experiment. - 培養皿 個影片檔及 b 捲影像00:19
close angle petri dishes on table. see glass tubes in rack, flasks and vials. see hand holding liquid dropper move towards petri dish. see sample liquid inside indicator. could be laboratory experiment or pregnancy test. neg cut. - 培養皿 個影片檔及 b 捲影像00:11
close angle petri dishes on table. see glass tubes in rack, flasks and vials. see hand holding liquid dropper move towards petri dish and drop sample liquid inside indicator. hand picks up indicator. - 培養皿 個影片檔及 b 捲影像00:20
close angle petri dishes on table. see glass tubes in rack, flasks and vials in background. see hand holding dropper deposit liquid onto plastic device on top of petri dish. see hand remove device from dish. could be laboratory experiment. - 培養皿 個影片檔及 b 捲影像00:20
close angle petri dishes on table. see glass tubes in rack, flasks and swabs in background. see hand enter pov from left and drop liquid onto plastic device on top of petri dish. hand removes device from dish. could be laboratory experiment. - 培養皿 個影片檔及 b 捲影像00:24
medium shot girl transferring drops from beaker into test tube in chemistry lab/ pouring liquid into cylinder - 培養皿 個影片檔及 b 捲影像00:39
black and white close up culture in petri dish with card placed in front of that reads 'germs - 培養皿 個影片檔及 b 捲影像00:03
1980 cu sceintist's hand using tweezers and petri dish / united states / audio - 培養皿 個影片檔及 b 捲影像00:07
close up pan researchers holding up petri dishes and comparing cultures in laboratory at milk factory - 培養皿 個影片檔及 b 捲影像00:22
close up pan researchers holding up petri dishes and comparing cultures in laboratory at milk factory - 培養皿 個影片檔及 b 捲影像00:19
medium shot researchers holding up petri dishes and comparing cultures in laboratory at milk factory - 培養皿 個影片檔及 b 捲影像00:06
close up researcher extracting mik from test tube and depositing it in petri dishes - 培養皿 個影片檔及 b 捲影像00:17
medium shot researcher holding and pointing to petri dish while talking to technicians in lab / indonesia - 培養皿 個影片檔及 b 捲影像00:13
medium shot tracking shot researcher walking up to technicians in lab / bandung, indonesia - 培養皿 個影片檔及 b 捲影像00:09
hand opening numbered glass container and pouring white powder into petri dish/ audio - 培養皿 個影片檔及 b 捲影像00:06