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免費 電氣服務 視頻 - 頁面 2

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在可再生能源风电站讨论一些问题并阅读文件的两名白人男女工程师
plumber explaining water system
白人女性工程師戴著頭盔,在巨大的風車輪下使用筆記型電腦,觀看它工作和生產能量
a caucasian and an african american male factory workers standing, in discussion, using a computer l
electrical engineer working check the electric current voltage and overload at front of load center cabinet or consumer unit for maintenance in main power distribution system room.
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electrical engineer working check the electric current voltage and overload at front of load center cabinet or consumer unit for maintenance in main power distribution system room.
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construction of a transformer substation
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man checking machinery
electrical engineer working check the electric current voltage and overload at front of load center cabinet or consumer unit for maintenance in main power distribution system room.
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electrical engineer working check the electric current voltage and overload at front of load center cabinet or consumer unit for maintenance in main power distribution system room.
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prison electrical workshop trades program behind bars correctional facility jail 4k
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man running on the street
electrical engineers inspect the electrical systems at the equipment control cabinet
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vertical video close up of person at home untangling electric power leads and connection cables for laptop or other electronic device
plumber tightening the faucet
man walking with tablet
electrical panel with blue 16a and red 32a three phase connectors and distribution box
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electrical engineer working check the electric current voltage and overload at front of load center cabinet or consumer unit for maintenance in main power distribution system room.
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electrical engineers inspect the electrical systems at the equipment control cabinet
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electrical engineers inspect the electrical systems at the equipment control cabinet
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hvac technician installs heating, ventilation and air conditioning systems
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man with yellow hardhat at the factory
electrical engineer working check the electric current voltage and overload at front of load center cabinet or consumer unit for maintenance with notebook in main power distribution system room.
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workmates with blueprint in factory
两位白人男女工程师在讨论可再生能源风电站的一些问题
the technician repair electronic temperature sensors with an electronic soldering iron
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the inspector checks the actual output voltage level of inverter
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the technician checking power lines of the heat exchanger with current clamps
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operator working on machinery
checking the operating voltage levels of the solar panel switchgear compartment
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telecommunication engineer performing maintenance at the top of a telephone pole
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一位戴着头盔的白人女工程师正在观看可再生能源风电站的一些蓝图
白人男子工程师戴着头盔拿着蓝图, 在巨大的风车<unk>轮机上与一名女同事交谈
學生在學校做工程項目
electrical engineer working check the electric current voltage and overload at front of load center cabinet or consumer unit for maintenance in main power distribution system room.
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electrical engineer working check the electric current voltage and overload at front of load center cabinet or consumer unit for maintenance in main power distribution system room.
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electrical engineers inspect the electrical systems at the equipment control cabinet
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electrical engineers inspect the electrical systems at the equipment control cabinet
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戴眼鏡的聰明男孩用鐵和<unk>子<unk>接線
白人女性和男性工程師戴著頭盔,在可再生能源風力發電站閱讀一些文件或藍圖的輪<unk>
male electrician connects wires from solar panel into electric power grid
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白人男子工程师戴着头盔和制服在可再生能源风电站使用笔记本电脑
electrical engineers inspect the electrical systems at the equipment control cabinet
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setting up equipment at a transformer substation. construction of a transformer substation
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construction of a transformer substation
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man lifting marble piece
an electrician installing an inverter in a home. the image shows technical skill, modern tools, and attention to safety in electrical work
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resistance test of temperature sensors in the cooling supply section of the ventilation unit
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an electrician installing an inverter in a home. the image shows technical skill, modern tools, and attention to safety in electrical work
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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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