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在影片中找到 731,818 個「test」的結果

TV colour bars test card screen. SMPTE Television Color Test Calibration Bars. Test card. SMPTE color bars. Graphic for footage video and 1Khz Sine Wave
00:28
4K Close up of pencil being used on a multiple choice test paper
00:33
Pipette with liquid inside drop water in test tubes. Close up macro.
00:14
Please stand by screen display featuring a tv test pattern with please stand by message. Suitable for indicating waiting times in presentations. 4k looping
00:10
Woman face, blue eyes and vision focus, thinking idea and contact lenses to see, eyesight and awareness. Closeup macro on face, eyeball and optometry test stare with awake perception of human anatomy
00:11
over shoulder doctor writing on a form for a blood test
00:18
Scantron Test Paper
00:16
hand with pencil taking a multiple choice test
00:18
A scientist in his laboratory holds a test tube containing DNA and is able to control the evolution of man thanks to holography. Concept of: DNA, technology, augmented reality.
00:14
Inserting the test sample in the sample container into the pre paid envelope ready for sending to the Bowel Cancer Screening Programme for testing.
00:25
Generic 3d car crash test with crashtest dummy. Car destruction. Realistic 4k animation.
00:10
Lab assistant makes urgent blood test for detection of antibodies and infections
00:29
Doctor hand taking a blood sample tube from a rack with machines of analysis in the lab background, Technician holding blood tube test in the research laboratory.
00:19
Tilting down slowly to a Covid 19 positive antigen test on a wooden table 23.98 fps
00:10
Glass test tubes with liquid on white background.
00:12
Evaluation or measurement concept. Student testing in exercise taking fill in exam at school or university in test room, writing document exams paper at campus classroom, education back to school idea
00:09
Blood test taking of a young patient man of a young woman doctor in a modern clinic room , assistant are behind of the doctor.
00:24
Thyroid hormone t3 and t4 molecules circulate blood vessels representing endocrine health with detailed blood test concept showing molecular structure and red blood cells supporting thyroid function
00:08
Close-up of the process of taking blood from the vein from man for biochemical blood testing. Preparation for blood test with by phlebotomist technician doctor in medical clinic.
00:56
Muscular athlete with mask running on treadmill in gym for monitoring his performance. Sportsman in sports science lab measuring his performance cardio respiratory test professional athlete
00:25
Vintage television test pattern overlay with colorful bars and glitch effect moving vertically with hand drawn scribbles creating analog distortion seamless loop animation
00:15
Conceptual 4K video of a doctor holding and looking at a test tube while testing samples for presence of coronavirus (COVID-19).
00:10
Vintage “Please Stand By” test card with radial calibration pattern, sepia tone, and film dust texture
00:20
Glitchy test pattern screen for please stand by break, suitable for video production, tv and film projects, broadcasting, waiting rooms, and presentations.
00:10
factory and industrial complex with passing clouds with test cards
00:08
after the test, the doctor puts the blood tests in a pallet
00:06
Blood, research and hands of scientist in laboratory with sample for science, medical study or investigation. Healthcare, pharmaceutical and person with DNA test vial, RNA analysis and writing notes
00:09
scientist take test tube
00:10
Doctor in medical PPE suit holds a covid antigen test of care testing. Lab performing rapid diagnostic test for antibodies to detect presence of antigens Coronavirus disease.
00:14
Classic television test pattern with 'SIGNAL LOST' message, showing broadcast interruption
00:05
Scientist in lab coat and blue gloves carefully dropping liquid into test tube with pipette with research and experiment and science and medical
00:08
Process of express fast coronavirus covid Antigen AG PCR testing examination at home, COVID-19 swab collection kit, test tube for taking OP NP patient specimen sample, testing carried out
00:06
Test results, working mom Unexpectedly Reading a pregnancy test Sitting in the bathroom, Slow motion Pregnant woman Analyzing test strips Women's health centers, Test
00:08
Lab assistant in gloves putting blood test tubes in rack or holder close up
00:10
An engineer in a crash test lab uses a car crash test system to simulate a traffic accident, to obtain the safety parameters of an eco-friendly cutting edge electric vehicle being developed.
00:12
Selective focus shot of female scientist in protective mask and glasses pouring blue liquid in test tubes with pipette during microbiology experiment in laboratory
00:18
Scientist holding test strip and checking result
00:14
Please Stand By - Retro Television Test Pattern with Static and Glitch Effect.
00:10
A beautiful woman takes a pregnancy test and as soon as she reads that she is pregnant, she explodes in a moment of happiness and joy for the future birth of her child. Concept of: birth, life, family
00:12
Lab technician in blue gloves labeling urine sample test tube with barcode in modern medical laboratory for diagnostic analysis and research.
00:13
the inspector checks the form and puts a a worst grade on a exam test
00:06
School girl writing in book in classroom, student learning for education at table and studying for exam in notebook in class. Children doing exam on paper, creative test at desk and focus on study
00:07
Lab technician holding blood tube sample for study. Medical technologist dropping blood into test tube in hospital laboratory
00:10
An old retro vintage tv test pattern (appearing on air in case of technical difficulties), with a heavy glitch effect.
00:18
Scientist with gloves injecting liquid sample into a plastic gradient lab for test
00:09
scientist hand putting test tubes ampoules bottles in pcr machine Spbas. dna test, molecular biology technology. concept examining, diagnostics, pharmaceutical laboratory
00:17
Scientist’s hand in blue nitrile glove holding a transparent test tube with liquid – close-up in laboratory environment, concept of medical research, analysis, or biotechnology
00:05
Filling out Answers on a Multiple Choice Test Close up
00:18
16:9 TV color bar damage glitch distortion background, abstract noise effect. (4K UHD seamless looping, computer digitally generated animation.)
00:10
Retro television broadcast test pattern featuring vibrant vertical color bars and a grayscale static section, indicating signal loss or display calibration
00:05
Lab Research Test Tubes
00:08
Unrecognizable man walking on treadmill during cardiac stress test
00:14
Animated Laptop with Online Survey and Feedback Video - Transparent
00:10
Blood samples in test tubes rotates in a centrifuge to separate blood from plasma for further analysis. Scientists biochemical laboratory manufacturing a vaccine against the covid-19 coronavirus.
00:10
Patient with diabetes using a blood glucose meter. Viewing 30‑day blood glucose test results stored in memory of glucometer. Blood sugar levels from high to normal after insulin therapy.
00:16
Asian female virologist in protective suit, mask, glasses and gloves dripping blue liquid from pipette into test tubes while working on antiviral vaccine at desk with microscope on it in laboratory
00:23
Doctor performing nasal swab covid test on an elderly woman. High quality 4k footage
00:09
Science, laboratory and woman with beaker for medical analysis, research and medicine. Healthcare, pharmaceutical and scientist with test tube for vaccine development, chemistry and liquid results
00:17
An abstract television test pattern displays vibrant color bars with digital glitches and static noise.
00:15
Streaming countdown TV test card signal pattern animation. Television Color Test seamless looping
00:14
Laboratory technician writing notes on a clipboard while holding a test tube with blue liquid, with test tubes rack and microscope in background, in a medical research laboratory
00:15
Gloved hand using pipette in laboratory with test tubes filled with red liquid for diabetes research concept
00:05
Process of coronavirus PCR antigen testing examination by nurse medic in laboratory lab, COVID-19 swab collection kit, test tube for taking OP NP patient specimen sample, patient receiving test, 4K
00:06
PH test and water analysis testing in laboratory
00:20
4k stock. Bad interface damage. No signal test pattern TV screen. Tv static animation glitch. Noise color error video with scanline effect.
00:13
Portrait of female scientist with a pipette analyzes a liquid to extract the DNA and molecules in the test tubes in laboratory. Shot in 8K. Concept: research,biochemistry, pharmaceutical medicine
00:16
A close-up dolly shot of a student filling in the little bubble circles of a test paper.
00:38
Generic 3d car crash test with crashtest dummy. Car destruction. Realistic 4k animation.
00:10
Scientist mixes chemicals in laboratory and holds test tube with orange liquid
00:15
Covid 19 antigen rapid test kit with positive result for infection. Coronavirus rapid self-test home kit close-up image
00:10
Woman enjoying negative pregnancy test result, showing it into camera, close-up
00:09
doctor writing blood test results on the patients form
00:17
Close up with rack focus of male scientist in protective goggles and face mask looking at blood sample in test tube
00:10
Mixed race female doctor wearing mask doing swab test on senior man at home
00:15
Pipette with water fall intro test tube with plant inside.
00:11
Side view of professional healthcare worker in protective uniform walking to young woman and taking nasal swab from her nose while doing covid test at home
00:14
Female and male engineers in experimental crash test laboratory watching process of traffic accident simulation, to get safety parameters of a new electro eco-friendly car body using computer system.
00:12
A vintage television screen displays colorful test pattern bars
00:11
Medical imaging center features advanced MRI machine and treatment area for patient diagnostics and care in modern facilities
00:10
TV test card signal pattern animation. Please stand by starting soon streaming countdown. Television Color Test Calibration Bars. seamless looping
00:14
Hand in glove holds a jar with urine analysis where mark a positive test for doping or drug
00:16
Close-up of the Row of Students Writing in the Notebooks, Taking Exam. Focus of Hands with Pens. Shot on RED EPIC-W 8K Helium Cinema Camera.
00:12
Process of coronavirus PCR antigen testing examination by nurse medic in laboratory lab, COVID-19 swab collection kit, test tube for taking OP NP patient specimen sample, patient receiving test, 4K
00:09
Woman uses pipette to drop liquid reagent into test tubes at experiment in laboratory. Flask and microscope display scientific research and analysis
00:06
Scientist in blue gloves holds rack of blue liquid filled test tubes amidst vapor
00:08
Lab assistant checking blood tube with positive HIV test result, taking notes
00:12
Analog capture (intentional heavy distortion fx): a tv test pattern (also called cinescope) made of blocks and shapes of varying dimensions.
00:12
Waist up slowmo of group of multiethnic college students sitting one by one at desk in classroom writing test
00:28
Drop chemical fluid into laboratory test tube , science biological or chemistry research concept
00:16
Scientists wearing lab coats and gloves are analyzing blood test tubes and taking notes in a laboratory
00:19
TV test tablet with glitch interference on lcd screen background animation - new quality digital twitch technology colorful video footage
00:10
extreme closeup of test tube of blood taken for a blood test
00:21
Close-up of doctor in gloves holding test tube with blood inside, she examining it during scientific experiment in the lab
00:07
One-minute black and white retro TV test pattern with countdown timer in center. Perfect for broadcasters and streamers countdown.
01:00
Analysis of the PH and chlorine of the water in a swimming pool in Summer. Check quality of water with test strip, comparing results.
00:15
Nurse puts a bar code on a test tube with a blood test
00:11
Medical laboratory assistant taking test tube with liquids, test with urine, Scientist doctor looking at sample in test tube. Laboratory analysis.
00:16
Retro TV test pattern please stand by screen suitable for showcasing broadcast standby or vintage television interruptions in presentations, videos, or graphics related to media and technology
00:20
Stress, depression and student writing in classroom at high school, learning and education burnout. Tired, frustrated and teenager boy take test exam at desk in class, anxiety or fail while studying
00:10
Lab Research Test Tubes
00:06