a field of study that deals with the building, designing, developing, etc. of structures, bridges, or machines

工程学
the branch of physics and electrical engineering that focuses on designing circuits that use transistors and microchips

电子学
a small semiconductor device, used in television and radio sets, able to amplify or rectify an electric current

晶体管, 晶体管
a solid substance that conducts electricity or heat better than insulators, but not as well as most metals

半导体, 半导体材料
a failure in a circuit caused when the electricity flows in the wrong route due to wire damage or fault in the connections of wires

短路, 短接
a conductor through which electricity travels to or from an object, such as batteries

电极, 电导体
total potential energy provided by a power source

电压, 伏特数
an electric device that is used to increase or decrease the voltage of an alternating current

变压器, 电压转换器
a piece of electronic equipment used for sending electromagnetic waves carrying radio or television signals

发射机, 传送器
to allow heat or electricity be transmitted

传导, 传输
to firmly attach or tighten something using a turning metal fastener

用螺丝固定, 拧紧
a piece of metal like a thick nail without a point that used to secure assembled parts by passing through holes and tightening with a nut

螺栓, 螺丝
a flat piece of metal with a hole in the middle through which a bolt is put to secure or fasten objects together

螺母, 螺栓
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

齿轮, 嵌齿
an electronic device with two terminals, typically allowing the flow of current in one direction only

二极管, 具有两个端子的电子元件
an electrical device that is used to stop or control the flow of current in a circuit in case it is too strong

保险丝, 熔断器
a machine that produces electricity by converting mechanical energy into electrical energy

发电机, 交流发电机
a device that allows movement between mechanical parts of a machine or converts backward and forward motion into circular movement

曲柄, 曲轴
a metal bar in an engine that enables movement and power to be transmitted from one part to another

轴, 传动轴
an instrument that automatically controls the temperature of a room, machine, etc.

恒温器
a device that allows steam, liquid, etc. to escape a machine, if the pressure inside the machine becomes too high

安全阀, 泄压阀
an electronic device that uses a small electrical current to control a larger current, acting like an automatic switch

继电器, 自动开关
a piece of equipment for generating oscillating electric currents or voltages by non-mechanical means

振荡器, 振荡发生器
a substance that doesn't conduct heat, sound, etc.

绝缘体, 隔热材料
a device that converts the energy of the sun into electricity

太阳能电池, 光伏电池
to replace or install new electrical wiring in something, like a building or a machine

重新布线, 安装新的电线
an electric current that reverses direction periodically, typically used in power distribution systems due to its efficiency in long-distance transmission

交流电, AC
托福高级词汇 |
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