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免費 用电线路的维修 視頻

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學生坐在桌子上做學校項目
engineer checking wires on glove that allows people to speak
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兩個聰明孩子坐在辦公桌旁做項目工作
wiring a 12v computer cpu powering 12v bilge pump in a boat
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close up of a pilot's hand starting aircraft engine by turning knob on the overhead panel
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太阳能电池板安装后在电路盒中的电力线工作电工
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在救護車上使用醫療裝置時, 靠近手
woman picking materials for her project
electricians hands testing current electric in control panel. electrician engineer work tester measuring voltage and current of power electric line in electical cabinet control.
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robots made with ai
electrical substation equipment
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用切割工具从用于安装太阳能电池板的螺旋<unk>中切割红色电线,慢动作近距离拍摄
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學生在學校做工程項目
一個聰明的女生正在做一個教育項目
close up of person at home untangling electric power leads and connection cables for laptop or other electronic device
telecommunication engineer performing maintenance at the top of a telephone pole
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努力的手试图解开捆绑的绳索盒的顶部视图
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electricians hands testing current electric in control panel. electrician engineer work tester measuring voltage and current of power electric line in electical cabinet control.
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networking service. network engineer administrator checking server hardware equipment of data center
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曼谷大街上方 的電線
connection procedure utp cable, twisting cable tool twisted pair ethernet utp cat 5, crimping rj45 lan cable, stepping to crimping rj45 connector.
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技术人员在太阳能电池板控制盒内运行电线,
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戴眼鏡的聰明男孩用鐵和<unk>子<unk>接線
electrician placing loose wires in electric panelboard before connecting them
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drone manufactures, chips, solders, repairs, mechanic and motherboard
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在旧飞机残骸中安装电线
vertical shot of student soldering circuit board
两名戴着硬帽子的公用事业工人坐在高压电线上进行维修
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electricity tower in rural village, thailand
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plumber fixing shower head
两名儿童正在构建电气机制的近距离拍摄
prison electrical workshop trades program behind bars correctional facility jail 4k
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the inspector checks the actual output voltage level of inverter
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白人孩子在电路板套件中测量电流
close-up of electrical substation equipment
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close-up of the device of a working electrician checking the presence of voltage in the network
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worker performing electronics repair
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两名学童在做工程项目的近距离拍摄
校友用<unk>子压紧锡<unk>线的近距离拍摄
bicycle mechanic
plumber tightening a nut
the inspector checks the actual output voltage level of inverter
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couple gathering the equipment for climbing
在第三世界國家的街道上暴露的電線
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networking service. network engineer administrator checking server hardware equipment of data center
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networking service. network engineer administrator checking server hardware equipment of data center
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bird moves along electrical wires and pole.
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repairing process snack pouch package filling and sealing machine. food industry
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network patch panel with cables
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connection procedure utp cable, twisting cable tool twisted pair ethernet utp cat 5, crimping rj45 lan cable, stepping to crimping rj45 connector.
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