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在影片中找到 700,626 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
TV test card signal pattern animation. Please stand by starting soon streaming countdown. Television Color Test Calibration Bars. seamless looping
00:14
Scantron Test Paper
00:16
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
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
Lab assistant makes urgent blood test for detection of antibodies and infections
00:29
Close up of lab technician hands in gloves applying barcode label on test tube with blood plasma or urine sample for medical analysis in clinical laboratory indoors.
00:13
Generic 3d car crash test with crashtest dummy. Car destruction. Realistic 4k animation.
00:10
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
Waist up slowmo of group of multiethnic college students sitting one by one at desk in classroom writing test
00:28
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
Analog capture (intentional heavy distortion fx): a tv test pattern (also called cinescope) made of blocks and shapes of varying dimensions.
00:12
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
Vintage switch on off television displays a Please stand by on retro TV screen test pattern after flicking a vintage switch.
00:10
Diabetic person performing blood sugar level test at home
00:12
Lab Research Test Tubes
00:08
TV test tablet with glitch interference on lcd screen background animation - new quality digital twitch technology colorful video footage
00:10
Please stand by screen with color bars pattern background with static noise
00:05
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
Glass test tube in laboratory with blue color ink inside. Close up macro.
00:20
Streaming countdown TV test card signal pattern animation. Television Color Test seamless looping
00:14
A man in the kitchen tests tap water quality with a test strip. Home testing for drinking water safety, pH, chlorine, and chemical contaminants.
00:12
Unrecognizable man walking on treadmill during cardiac stress test
00:14
Nurse puts a bar code on a test tube with a blood test
00:11
Scientists wearing lab coats and gloves are analyzing blood test tubes and taking notes in a laboratory
00:19
Classic monochrome TV test pattern displaying the 'please stand by' message, simulating a vintage broadcast interruption with static and visual glitches
00:08
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
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
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
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
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
16:9 TV color bar damage glitch distortion background, abstract noise effect. (4K UHD seamless looping, computer digitally generated animation.)
00:10
An old retro vintage tv test pattern (appearing on air in case of technical difficulties), with a heavy glitch effect.
00:18
Technical difficulties error tv test pattern showcases a message for broadcast production, television, troubleshooting, technical difficulties, media projects, and presentations.
00:10
Lab technician holding blood tube sample for study. Medical technologist dropping blood into test tube in hospital laboratory
00:10
Please stand by tv test pattern retro vintage broadcast. 4k animation video
00:10
Conceptual 4K video of a doctor holding and looking at a test tube while testing samples for presence of coronavirus (COVID-19).
00:10
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
after the test, the doctor puts the blood tests in a pallet
00:06
Gloved hand using pipette in laboratory with test tubes filled with red liquid for diabetes research concept
00:05
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
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
Portrait of happy young woman looking at pregnancy test. Girl smiling after the positive result of pregnancy test
00:14
Lab technician in blue gloves labeling urine sample test tube with barcode in modern medical laboratory for diagnostic analysis and research.
00:13
Lab assistant in gloves putting blood test tubes in rack or holder close up
00:10
Scientist with gloves injecting liquid sample into a plastic gradient lab for test
00:09
Scientist holding test strip and checking result
00:14
Hand in glove holds a jar with urine analysis where mark a positive test for doping or drug
00:16
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
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
Tilt up close up shot of female biomedical scientist in goggles and face mask putting test tubes with blood samples from patients tested positive for covid-19 in rack
00:06
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
doctor writing blood test results on the patients form
00:17
PCR test taking a sample from the tube coronavirus tube
00:25
A crash test dummy in a car with a deployed airbag and smoke demonstrates the critical life-saving technology of vehicle safety testing during a simulated high-speed collision
00:08
Laboratory researcher or nurse pipets patient sample into a test tube. Genetic engineering or genetic disease screening. Cancer and drug research and science
00:10
School / university Students hands taking exams, writing examination room with holding pencil on optical form answers paper sheet on desk doing final test in classroom. Education assessment Concept
00:08
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
Covid 19 antigen rapid test kit with positive result for infection. Coronavirus rapid self-test home kit close-up image
00:10
A vintage television screen displays colorful test pattern bars
00:11
scientist hand putting test tubes ampoules bottles in pcr machine Spbas. dna test, molecular biology technology. concept examining, diagnostics, pharmaceutical laboratory
00:17
Filling out Answers on a Multiple Choice Test Close up
00:18
Generic 3d car crash test with crashtest dummy. Car destruction. Realistic 4k animation.
00:10
Doctor or laboratory technician showing container with urine sample for analysis and research in medical laboratory, medical urine test and health scanning.
00:10
Closeup view 4k video of child hand with red spot reaction to conducting Mantoux test after 72 hours from injection. Nurse in blue gloves applying transparent ruler to check reaction.
00:16
Close Up Tracking Of Woman Holding Positive Pregnancy Test In Public Bathroom
00:10
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
Optometry, eyesight and eye test for senior woman, optometrist and slit lamp. Doctor, specialist and healthcare professional for ophthalmology, prescription and optician for eyecare appointment exam
00:06
No signal test pattern TV screen. 4k footage.
00:13
Close up with rack focus of male scientist in protective goggles and face mask looking at blood sample in test tube
00:10
The blood analysis. Analysis to identify the HIV virus.
00:13
Drop chemical fluid into laboratory test tube , science biological or chemistry research concept
00:16
Medical laboratory assistant taking test tube with liquids, test with urine, Scientist doctor looking at sample in test tube. Laboratory analysis.
00:16
the inspector checks the form and puts a a worst grade on a exam test
00:06
close up view of Lab Worker hands Extracts blood from vein. a stream of blood flows into the test tube
00:09
Medical Science Laboratory with Diverse Team of Professional Biotechnology Scientists Developing Drugs, Female Biochemist Working on Computer Showing Gene Therapy Interface. Back view Shot
00:16
Distorted Television bars signal. Error on the test signal
00:16
A close-up of medical technologist taking out blood test tubes from hematology analyzer. Completed tests. Blurred background. Scientific and healthcare research concept
00:24
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
Female doctor take blood sample from patient to test for coronavirus in hospital. Sampling plasma for treatment of covid patients. Clinical research. Covid-19 pandemic and medicine concept.
00:17
Woman fingers pregnancy test making indoor closeup. Lady looking negative result Generative AI
00:09
Lab assistant checking blood tube with positive HIV test result, taking notes
00:12
hand with pencil taking a multiple choice test
00:18
Glass test tubes with liquid on white background.
00:12
Tilting down slowly to a Covid 19 positive antigen test on a wooden table 23.98 fps
00:10
Classic vintage 'please stand by' screen displaying a retro television test pattern with distressed textures and vibrant color bars, signaling an upcoming broadcast pause
00:10
Drop of blue transparent liquid into test tubes in laboratory
00:15
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
4k video no signal test pattern on TV screen; colorful flickering. Perfect for media, broadcasting, technology, communication, or entertainment industry projects.
00:10
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
Broadcast Test Card With 59-Second Countdown For Technical Breaks. Color television test pattern with Please Stand By text and countdown timer from 00:59 to 00:00 seconds.
01:00
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.
00:13
Biopharmaceutical, DNA helix, genetic testing
00:14
Doctor or laboratory technician dials urine from container with sample for analysis and research in medical laboratory, medical urine test and health scanning
00:29
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