an electronic device that uses a small electrical current to control a larger current, acting like an automatic switch
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继电器(电子设备)
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a type of rolling-element bearing that uses balls to maintain the separation between the bearing races, reducing friction and enabling smooth rotation
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滚珠轴承
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a mechanical transmission system using a flexible belt to transfer power between rotating shafts
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皮带(机械)
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a type of nuclear reactor that generates more fissile material than it often consumes
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增殖反应堆
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an environment that can be used to verify the correctness of a model or design
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用于评估某事物的环境
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a wheel with a set of square or triangular teeth sticking out around the edge that fits into the edge of a similar wheel, causing both wheels to turn
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雉堞
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a device that allows movement between mechanical parts of a machine or converts backward and forward motion into circular movement
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曲柄
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a mechanical component that transmits rotational power from the engine to the wheels or other driven components of a vehicle or machine
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传动轴
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gears, toothed wheels, or mechanical components designed to transmit and control power between rotating shafts in a machine, vehicle, or system
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传动装置
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a thorough inspection and repair of a machine or system to improve its performance or extend its lifespan
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维修工程
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a toothed wheel with projections that mesh with a chain, track, or other perforated or indented material, typically used to transmit motion or power in machinery, vehicles, or bicycles
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链
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a machine tool that rotates a workpiece so you can shape it by cutting, sanding, or drilling
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车床
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a professional who uses specialized software to create detailed drawings and plans for buildings, machines, or products
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借助计算机进行设计的人
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a permanent fastener with a head on one end and a deformable shaft that forms a second head when joining materials together
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铆钉
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a method used to extract natural gas or oil from deep underground by injecting high-pressure fluid to fracture rock formations
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水力压裂
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an electric device that is used to increase or decrease the voltage of an alternating current
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变压器(电力设备)
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a facility that transforms voltage levels and regulates electrical currents, typically situated in an electrical power distribution system
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变电站
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a chemical reaction between a fuel and an oxidizing agent, typically producing heat and light
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燃烧
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a pipe, tube, or channel that is used to protect, enclose, or route electrical wires, cables, or other utilities for the purpose of safe and organized transmission
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电气导管
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an electric current that reverses direction periodically, typically used in power distribution systems due to its efficiency in long-distance transmission
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交流电
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a gas, especially methane, that is produced as a result of the decomposition of animal or plant remains, which is used as fuel
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沼气
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a type of fuel made from living matter, such as plants or waste, that can be used as a renewable energy source
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生物燃料
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