📚 GCSE Edexcel Engineering Vocabulary and Terminology Quick Reference Guide | GCSE Edexcel 工程词汇术语速记指南
Mastering key terms is essential for success in GCSE Edexcel Engineering. This guide breaks down fundamental vocabulary across materials, mechanics, electronics, manufacturing, design, and more, providing clear English definitions followed by Chinese translations to support bilingual learning and quick revision.
掌握关键术语是 GCSE Edexcel 工程学科成功的基础。本指南涵盖材料、力学、电子、制造、设计等领域的核心词汇，以清晰的英文定义配合中文翻译，助力双语学习和快速复习。
1. Material Properties | 材料性能
Hardness: The resistance of a material to indentation, scratching, or wear.
硬度：材料抵抗压痕、刮擦或磨损的能力。
Toughness: The ability of a material to absorb energy and deform plastically without fracturing.
韧性：材料吸收能量并发生塑性变形而不断裂的能力。
Ductility: The capacity of a material to be stretched into a wire or drawn without breaking.
延展性：材料被拉伸成丝或抽拉而不破裂的能力。
Malleability: The property of a material that allows it to be hammered or rolled into thin sheets.
可锻性：材料能被锤击或轧制成薄板的特性。
Elasticity: The ability of a material to return to its original shape after the removal of a load.
弹性：材料在载荷移除后恢复原始形状的能力。
Plasticity: Permanent deformation of a material after the applied stress exceeds its elastic limit.
塑性：材料在施加的应力超过弹性极限后发生的永久变形。
Stiffness: The resistance of a material to elastic deformation under load; measured by the Young’s modulus.
刚度：材料在载荷下抵抗弹性变形的能力；由杨氏模量度量。
Strength: The maximum stress a material can withstand before failure, including tensile, compressive, and shear strengths.
强度：材料失效前能承受的最大应力，包括抗拉、抗压和抗剪强度。
Density: Mass per unit volume of a material (kg/m³), influencing weight and buoyancy.
密度：材料单位体积的质量（千克/立方米），影响重量和浮力。
Fatigue limit: The maximum stress a material can endure for an infinite number of load cycles without failing.
疲劳极限：材料能够承受无限次载荷循环而不失效的最大应力。
2. Common Engineering Materials | 常用工程材料
Ferrous metals: Metals containing iron, such as carbon steel and cast iron; generally magnetic and prone to rust.
黑色金属：含铁金属，如碳钢和铸铁；通常有磁性且易生锈。
Non-ferrous metals: Metals without iron (e.g., aluminium, copper, zinc), often chosen for corrosion resistance or low density.
有色金属：不含铁的金属（如铝、铜、锌），通常因耐腐蚀性或低密度而被选用。
Alloy: A mixture of two or more elements, at least one being a metal, to enhance properties (e.g., brass = copper + zinc).
合金：两种或多种元素的混合物（至少一种为金属），用以改善性能（例如黄铜 = 铜 + 锌）。
Polymer: A large molecule made of repeating structural units (monomers); used in plastics like polyethylene and PVC.
聚合物：由重复结构单元（单体）构成的大分子；用于制造聚乙烯、聚氯乙烯等塑料。
Thermoplastic: A polymer that softens when heated and hardens when cooled, allowing remoulding (e.g., ABS, nylon).
热塑性塑料：加热变软、冷却变硬并可重复成型的聚合物（如 ABS、尼龙）。
Thermoset: A polymer that sets permanently when heated and cannot be remoulded (e.g., epoxy resin, melamine).
热固性塑料：加热后永久固化、不可再次成型的聚合物（如环氧树脂、密胺）。
Composite: A material made from two or more distinct constituents combined to achieve superior properties (e.g., carbon fibre reinforced polymer).
复合材料：由两种或多种不同组分结合以获得优异性能的材料（如碳纤维增强聚合物）。
Ceramic: Inorganic, non-metallic solids processed at high temperatures; typically hard, brittle, and heat resistant (e.g., alumina, silicon carbide).
陶瓷：高温加工的无机非金属固体；通常坚硬、脆且耐热（如氧化铝、碳化硅）。
Smart material: A material whose properties change in response to external stimuli (e.g., shape memory alloy, piezoelectric crystal).
智能材料：性能随外部激励（如温度、应力）而变化的材料（如形状记忆合金、压电晶体）。
3. Manufacturing Processes | 制造工艺
Casting: Pouring molten metal into a mould cavity and allowing it to solidify into the desired shape.
铸造：将熔融金属倒入模具型腔，使其凝固成所需形状。
Forging: Shaping metal using compressive forces, often at high temperature, to improve grain structure and strength.
锻造：使用压缩力（通常在高温下）使金属成形，以改善晶粒结构和强度。
Extrusion: Forcing material through a shaped die to produce long objects with a constant cross-section (e.g., aluminium window frames).
挤压：迫使材料通过成形模具，生产截面恒定的长条制品（如铝窗框）。
Rolling: Reducing thickness of metal by passing it between rotating rollers; used for sheet and plate production.
轧制：使金属通过转动的轧辊以减薄厚度，用于板材生产。
Welding: Joining metals by melting the base material and adding a filler to form a strong, permanent joint.
焊接：通过熔化母材并添加填充金属形成牢固永久接头的连接方法。
Brazing: Bonding metals using a filler metal with a lower melting point than the workpieces (above 450°C) without melting the base metal.
钎焊：使用熔点比工件低的填充金属（高于450°C）进行连接，母材不熔化。
Machining: Removing material using cutting tools (e.g., turning, milling, drilling) to achieve precise dimensions and surface finish.
机械加工：利用切削刀具去除材料（如车削、铣削、钻削）以获得精确尺寸和表面光洁度。
Injection moulding: A process for plastic parts where molten polymer is injected under high pressure into a mould cavity.
注塑成型：将熔融塑料在高压下注入模具型腔以生产塑料零件的工艺。
3D printing (Additive manufacturing): Building an object layer by layer from a digital model, using materials like PLA or resin.
3D 打印（增材制造）：基于数字模型，将材料（如 PLA 或树脂）逐层堆积制成物体。
4. Mechanics & Structures | 力学与结构
Force: A push or pull acting on an object, measured in newtons (N).
力：作用在物体上的推或拉，单位为牛顿 (N)。
Stress: Force per unit area within a material, defined as σ = F / A, measured in pascals (Pa) or N/m².
应力：材料内部单位面积上的力，σ = F / A，单位为帕斯卡 (Pa) 或 牛/米²。
Strain: The deformation produced in a material divided by its original length; it is a dimensionless quantity.
应变：材料产生的变形除以其原始长度；无量纲量。
Young’s modulus: The ratio of stress to strain in the elastic region, indicating material stiffness (E = σ / ε).
杨氏模量：弹性区内应力与应变之比，表示材料的刚度 (E = σ / ε)。
Moment: The turning effect of a force about a pivot, calculated as force × perpendicular distance (Nm).
力矩：力绕支点产生的转动效应，等于力 × 垂直距离 (Nm)。
Equilibrium: A state where all forces and moments acting on a body are balanced, resulting in no net motion.
平衡：作用在物体上的所有力和力矩相互抵消、无净运动的状态。
Lever: A simple machine consisting of a rigid bar pivoting around a fulcrum to amplify an input force.
杠杆：一种绕支点转动的刚性杆，用于放大输入力的简单机械。
Gear ratio: The ratio of the number of teeth on two meshing gears (driven / driver), affecting speed and torque.
齿轮比：两个啮合齿轮的齿数比（从动轮/主动轮），影响转速和扭矩。
Pulley system: A combination of wheels and ropes to change the direction of a force and provide mechanical advantage.
滑轮系统：通过轮组和绳索改变力的方向并提供机械效益的装置。
5. Electrical Fundamentals | 电子学基础
Voltage (V): The electrical potential difference between two points; the ‘push’ that drives current, measured in volts (V).
电压 (V)：两点之间的电势差；驱动电流的“推动力”，单位为伏特 (V)。
Current (I): The flow of electric charge, measured in amperes (A).
电流 (I)：电荷的流动，单位为安培 (A)。
Resistance (R): Opposition to current flow in a material or component, measured in ohms (Ω).
电阻 (R)：材料或元件对电流流动的阻碍，单位为欧姆 (Ω)。
Ohm’s law: V = I × R; the relationship linking voltage, current, and resistance in a circuit.
欧姆定律：V = I × R；电路中电压、电流和电阻之间的关系。
Power: The rate at which electrical energy is transferred, P = V × I, measured in watts (W).
电功率：电能传输的速率，P = V × I，单位为瓦特 (W)。
Series circuit: Components connected end-to-end, sharing the same current; total resistance Rₜ = R₁ + R₂ + …
串联电路：元件首尾相连，电流相同；总电阻 Rₜ = R₁ + R₂ + …
Parallel circuit: Components connected across the same two points, sharing the same voltage; total resistance is reduced.
并联电路：元件跨接在相同两点上，电压相同；总电阻减小。
Diode: A semiconductor device that allows current to flow in one direction only (symbol: →|).
二极管：仅允许电流单向流动的半导体器件（符号：→|）。
Transistor: A semiconductor device used as a switch or amplifier, controlled by a small base current.
晶体管：用作开关或放大器的半导体器件，由小基极电流控制。
6. Systems & Control | 系统与控制
Input device: A component that receives signals from the environment (e.g., sensor, switch, microphone) and sends them to the controller.
输入设备：从环境接收信号（如传感器、开关、麦克风）并将其传递给控制器的元件。
Process: The decision-making stage where the controller compares input data with a desired value and determines the output.
处理：控制器将输入数据与设定值比较并确定输出指令的决策阶段。
Output device: An actuator that produces a physical response (e.g., motor, LED, buzzer).
输出设备：产生物理响应的执行器（如电机、LED、蜂鸣器）。
Feedback: Information about the output that is routed back to the input to adjust the process and achieve the desired state.
反馈：输出信息返送至输入端以调整过程并达到期望状态。
Open-loop control: A system with no feedback; the output has no influence on the control action (e.g., a toaster timer).
开环控制：无反馈的系统；输出不影响控制动作（例：烤面包机定时器）。
Closed-loop control: A system that uses feedback to compare the actual output with the desired value and corrects errors automatically.
闭环控制：利用反馈将实际输出与期望值比较并自动校正误差的系统。
Sensor: A device that detects changes in physical conditions (temperature, light, pressure) and converts them into an electrical signal.
传感器：检测物理条件变化（温度、光、压力）并将其转换为电信号的装置。
Microcontroller: A compact integrated circuit containing a processor, memory, and input/output peripherals; often programmed for dedicated tasks.
微控制器：包含处理器、存储器和输入输出外设的紧凑集成电路；通常经编程执行特定任务。
7. Design & Communication | 设计与沟通
CAD (Computer-Aided Design): Software used to create precise 2D or 3D technical drawings and models of products.
CAD（计算机辅助设计）：用于创建精确的二维或三维产品技术图纸和模型的软件。
CAM (Computer-Aided Manufacturing): The use of software to control machine tools such as CNC routers or 3D printers for producing parts.
CAM（计算机辅助制造）：使用软件控制机床（如 CNC 雕刻机或 3D 打印机）来生产零件。
Orthographic projection: A method of representing a 3D object using several 2D views (front, top, side), typically in first or third angle.
正投影：利用多个二维视图（主视、俯视、侧视）表现三维物体的方法，常采用第一或第三角投影。
Isometric drawing: A pictorial drawing where the three axes are equally inclined (120° apart) to show a 3D view with equal scaling.
等轴测图：三轴互成 120° 的立体图，以等比例呈现三维视图的绘画方式。
Dimensioning: Adding measurements (linear, radial, angular) to a drawing to specify the exact size and location of features.
尺寸标注：在图纸上添加线性、半径、角度等尺寸，以明确特征的确切大小和位置。
Tolerance: The permissible variation in a dimension, indicated as ± a value, to ensure parts fit together correctly.
公差：尺寸允许的变动范围，常以 ± 值标示，以确保零件正确装配。
Surface finish: The texture or roughness of a surface, defined by average deviation from the nominal surface (Ra value).
表面光洁度：表面的纹理或粗糙度，由距名义表面的平均偏差 (Ra 值) 定义。
Bill of Materials (BOM): A list of all components, parts, and materials required to manufacture a product, often included on assembly drawings.
物料清单 (BOM)：制造产品所需全部组件、零件和材料的清单，常附于装配图。
8. Quality & Testing | 质量与测试
Quality Assurance (QA): A proactive system focused on preventing defects during production by setting standards and processes.
质量保证 (QA)：通过设定标准和流程在生产过程中预防缺陷的主动体系。
Quality Control (QC): The inspection and testing of products after manufacturing to identify and reject faulty items.
质量控制 (QC)：制造后对产品进行检验和测试，以识别并剔除不合格品。
Tensile testing: Stretching a sample until fracture to measure properties such as tensile strength, elongation, and yield point.
拉伸试验：将试样拉伸至断裂，以测量抗拉强度、伸长率和屈服点等性能。
Hardness testing: Methods like Brinell, Rockwell, or Vickers that measure resistance to indentation to estimate material strength.
硬度测试：布氏、洛氏或维氏等通过测量压痕抗力来估算材料强度的方法。
Non-Destructive Testing (NDT): Techniques such as ultrasonic, X-ray, or dye penetrant inspection that evaluate materials without causing damage.
无损检测 (NDT)：超声波、X 射线或渗透检测等技术，在不损伤材料的情况下进行评估。
Fatigue testing: Subjecting a material or component to cyclic loading to determine its endurance limit and lifespan under repeated stress.
疲劳测试：对材料或零件施加循环载荷，以确定其在重复应力下的耐久极限和寿命。
Sampling: Testing a random selection of items from a production batch to infer the quality of the whole batch.
抽样检验：从一批产品中随机抽取一部分进行测试，以推断整批质量。
9. Sustainability & Environment | 可持续性与环境
Life Cycle Assessment (LCA): An analysis of the environmental impacts of a product from raw material extraction through manufacture, use, to disposal.
生命周期评估 (LCA)：从原材料提取、制造、使用到废弃全过程对产品环境影响的分析。
Carbon footprint: The total greenhouse gas emissions associated with a product, process, or organisation, expressed as CO₂ equivalent.
碳足迹：与产品、过程或组织相关的温室气体排放总量，以 CO₂ 当量表示。
Recyclability: The ease with which material can be recovered and reprocessed into new products at the end of life.
可回收性：材料在寿命终结时被回收并再加工成新产品的容易程度。
Biodegradable: A material capable of being decomposed by microorganisms into natural substances, reducing environmental persistence.
可生物降解：材料能被微生物分解为天然物质，减少环境持久性。
Circular economy: An economic model that aims to keep materials in use for as long as possible through reuse, repair, and recycling, minimising waste.
循环经济：通过再利用、维修和回收使材料尽可能长地保持在用状态、最小化废弃物的经济模型。
REACH: EU regulation concerning the Registration, Evaluation, Authorisation and Restriction of Chemical substances to protect human health and the environment.
REACH：欧盟关于化学品注册、评估、授权和限制的法规，以保护人类健康和环境。
RoHS: Restriction of Hazardous Substances directive limiting the use of lead, mercury, cadmium, and other harmful substances in electrical equipment.
RoHS：有害物质限制指令，限制电气设备中使用铅、汞、镉等有害物质。
10. Common Units & Symbols | 常用单位与符号
Force: Measured in newtons (N); 1 N = 1 kg·m/s².
力：单位为牛顿 (N)；1 N = 1 kg·m/s²。
Pressure/Stress: pascal (Pa), 1 Pa = 1 N/m²; commonly megapascals (MPa) for material strength.
压力/应力：帕斯卡 (Pa)，1 Pa = 1 N/m²；材料强度常用兆帕 (MPa)。
Energy/Work: joule (J); also watt-second (W·s); 1 J = 1 N·m.
能量/功：焦耳 (J)；也等于瓦特·秒 (W·s)；1 J = 1 N·m。
Power: watt (W); 1 W = 1 J/s. In electrical terms, P = V × I.
功率：瓦特 (W)；1 W = 1 J/s。在电学中 P = V × I。
Voltage: volt (V).
电压：伏特 (V)。
Current: ampere (A).
电流：安培 (A)。
Resistance: ohm (Ω).
电阻：欧姆 (Ω)。
Mass: kilogram (kg); 1 kg = 1000 g.
质量：千克 (kg)；1 kg = 1000 g。
Length: metre (m); millimetre (mm) commonly used in engineering drawings (1 m = 1000 mm).
长度：米 (m)；工程图纸常用毫米 (mm) (1 m = 1000 mm)。
Density: typically kg/m³ or g/cm³ (e.g., water = 1000 kg/m³).
密度：通常为 kg/m³ 或 g/cm³（如水 = 1000 kg/m³）。
ANGLE: degree (°) or radian (rad). For example, 360° = 2π rad.
角度：度 (°) 或弧度 (rad)。例如 360° = 2π rad。
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