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免費 電氣儀器 視頻

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closeup of quantic control panel. selective focus
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調節實驗室電池電源的電壓
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electrician student checking voltage and amps with multimeter
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close-up of the quantum control panel - selective focus
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白人孩子在电路板套件中测量电流
測量儀器 測量實驗室的測量設備
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在救護車上使用醫療裝置時, 靠近手
操作测量设备的人员在测量实验室中
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戴眼鏡的聰明男孩用鐵和<unk>子<unk>接線
自動車機械工廠 輪胎更換和維修
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digital multimeter in a tool box. close up
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两名学童在做工程项目的近距离拍摄
technician flipping toggle switches to test electrical equipment in a factory slow motion
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male hand setting sports timer in slow motion
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引導時間 40 分鐘
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close of a hand pulling a lever in a flight simulator cockpit
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a transistor and ic integrated circuit chip on a dusty old board with many other electronic components
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兩個聰明孩子坐在辦公桌旁做項目工作
close-up of the device of a working electrician checking the presence of voltage in the network
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兩個年輕的同學一起做學校項目
incoming wires are attached to solar power controller, closeup view
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a close-up view of a laboratory workspace where a technician is adjusting a digital soldering station, the table is scattered with various tools, a microscope, and other electronic equipment
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making medicine factory, medical staff in protective uniform work using tablets to walk and communicate with pharmaceutical facilities at drug manufacturing plant
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manufacturing process automation control panel
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學生在學校做工程項目
a close-up view of a technician's gloved hand pressing the red power switch off on a black temperature control device
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engineer measuring technical parameters of industrial machine with tester
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engineer measuring technical parameters of industrial machine with tester
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两名儿童正在构建电气机制的近距离拍摄
male hand setting sports timer
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一個聰明的女生正在做一個教育項目
兩個孩子在做工程課題的近距離拍攝
vintage electrical measuring instrument
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modern industrial equipment for sewing in a clothing factory
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ai retro television sets with overlayed film glitch textures
industrial control panel with operator
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man and woman doing control at brewery
兩個年輕的同學一起在工程學上做項目
man and woman doing control at brewery
young man practising with the guitar
校友用<unk>子压紧锡<unk>线的近距离拍摄
兩個聰明的小朋友在做工程學的學校項目
沿著實驗室台和設備進行追蹤
flatlay top down engineer constructing design product drilling measurement difficult task science guy working smart blueprint architecture patent crafting inventor inventing tool 3d printed item tech
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electronic equipment repair shop. the engineer technician solders the printed circuit board of an electronic device under a microscope.
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智能儿童<unk>接电路板的近距离拍摄
man using a multimeter to measure the voltage of the batteries
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學生坐在桌子上做學校項目
電氣測試器 diy 電工工具
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電子工程工作空間,包括麵包板,導線和多元計
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