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免費 工程科學 視頻

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两名儿童正在进行电气施工的近距离拍摄
chemical, biological formulas, sketches and graphs in front of an old coal power plant works with strong co2 emissions
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兩個孩子在做工程學的學校項目
holding scientific equipment, person in lab coat with chemistry formulas animation
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兩個聰明的小朋友一起做一個有趣的項目
animation of a construction site over a group of caucasian engineers
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兩個孩子白天在家裡做電子學校的項目
animation of data processing on blue background
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mathematical equations against blueprint documents
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multiple changing symbols and chemicals structures against data processing on blue background
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智能儿童<unk>接电路板的近距离拍摄
mathematical equations against blueprint documents
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穿制服的男子从塑料包裹中取出耳塞, 放在桌子上,
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兩個年輕的同學一起做學校項目
兩個聰明的小朋友在做工程學的學校項目
animation of glowing blue computer circuit board elements over white background
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兩個瘋狂的孩子坐在辦公桌旁做項目工作
animation of data processing and globe over blue background
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戴眼鏡的聰明男孩用鐵和<unk>子<unk>接線
從實驗室的很棒的錄音
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digital 3d model of a city structure
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mother and daughter at the park
两名学童在做工程项目的近距离拍摄
mathematical equations floating against spots of light and cityscape sketch on blue background
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math equations and shapes on blue background
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scientists looking through microscope
animation of dna strand and scientific data processing over diverse scientists in laboratory
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technical drawing and tools
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inventor in lab coat takes notes on tablet while working in mechanical workshop, partial view of another person nearby, industrial workspace filled with engineering components in background
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vertical shot of students hands as they work on group engineering project
兩個戴眼鏡的聰明現代孩子在做項目工作
animation of mathematics formulas on grey background
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mathematical equations and formulas floating against cityscape sketch on black background
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两名儿童正在构建电气机制的近距离拍摄
animation of mathematical formulae over female using microscope
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futuristic interface with graphs and geometrical figures and program codes in the background
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business team meeting
urban planning and development with augmented reality
animation of digital data processing over server room
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animation of network of connections over scientists holding vr headset in laboratory
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using tablet, healthcare professional with network connections and data processing animation
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animation of statistics and data processing over yellow hard hats and plans on desk in office
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兩個孩子一起做一個有趣的項目
front view of asian male architect looking at architectural model in a modern office 4k
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animation of mathematical equations over diverse scientists working in lab
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animation of data processing over cityscape
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animation of mathematics formulas on grey background
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兩個聰明的小朋友在家裡做學校項目
兩個聰明孩子坐在辦公桌旁做項目工作
animation of screens with data processing over blue background
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