📚 Year 8 CAIE Engineering: Key Vocabulary Quick Memorisation Guide | Year 8 CAIE 工程：词汇术语速记指南
Mastering engineering vocabulary in Year 8 is the first step to thinking like an engineer. This guide breaks down essential CAIE terms into thematic clusters, pairs them with proven memory techniques, and shows you how to connect abstract words to real-world structures, circuits, and mechanisms. Let’s turn tricky terminology into lasting knowledge.
掌握 Year 8 工程词汇是像工程师一样思考的第一步。本指南将 CAIE 核心术语按主题分组，搭配经过验证的记忆技巧，教你如何将抽象的词语与真实世界的结构、电路和机构联系起来。让我们把棘手的术语转化为持久的知识。
1. Materials and Their Properties | 材料及其性能
Engineering materials are the building blocks of every design. Knowing their properties helps you choose the right material for the job. Use the acronym ‘FAT DUCT’ to recall key property groups – Flexibility, Absorbency, Transparency, Density, Durability, Ultimate strength, Conductivity, and Toughness.
工程材料是每个设计的基础。了解它们的性能有助于你为任务选择正确的材料。使用首字母缩写 ‘FAT DUCT’ 来记忆关键性能组别——柔韧性、吸收性、透明性、密度、耐久性、极限强度、导电性和韧性。
Ferrous metal – a metal containing iron, often magnetic and prone to rust. Think ‘Ferrous = Fe (iron)’. Example: steel.
铁质金属——含铁的金属，通常具有磁性且易生锈。联想“Ferrous = Fe（铁）”。例如：钢。
Non-ferrous metal – a metal without iron, generally more corrosion-resistant. Remember ‘No Fe, no rust’. Example: aluminium.
非铁质金属——不含铁的金属，通常更耐腐蚀。记住“无 Fe，不生锈”。例如：铝。
Thermoplastic – a plastic that softens when heated and hardens when cooled, repeatable. Visualise ‘Thermo- (heat) + plastic (reshapeable)’.
热塑性塑料——加热软化、冷却硬化且可重复成型的塑料。想象“Thermo-（热）+ plastic（可塑）”。
Thermosetting plastic – a plastic that sets permanently when heated; cannot be remoulded. Mnemonic: ‘Thermo-SET: once set, stays set’.
热固性塑料——加热后永久定型的塑料，无法重新塑形。助记：“热固：一旦固定，保持不变”。
| Property 性能 | Memory Hook 记忆钩子 |
|---|---|
| Tensile strength 抗拉强度 | ‘Tension pulls apart’ – imagine a tug-of-war. |
| Compressive strength 抗压强度 | ‘Compress = squash together’ – think of crushing a can. |
| Hardness 硬度 | ‘Hard to scratch’ – diamond cuts glass. |
| Elasticity 弹性 | ‘Elastic returns to shape’ – a rubber band. |
2. Forces and Structural Elements | 力与结构元素
Forces act on every structure. Linking each force to a physical sensation or a simple shape makes them unforgettable. A structure must withstand tension, compression, bending, torsion, and shear – collectively, ‘Twist, Bend, Stretch, Squash, Slide’.
力作用于每个结构。将每一种力与身体感觉或简单形状联系起来，能让它们变得难忘。结构必须承受拉伸、压缩、弯曲、扭转和剪切——统称为“扭、弯、拉、压、滑”。
Tension – a pulling force that stretches a member. Picture a rope in a tug-of-war; the rope is in tension.
拉伸——一种使构件伸长的拉力。想象拔河中的绳子；绳子处于拉伸状态。
Compression – a pushing force that shortens or squeezes. Think of a column holding up a roof; it is under compression.
压缩——一种使构件缩短或挤压的推力。想象支撑屋顶的柱子；它处于压缩状态。
Bending – a combination of tension on one side and compression on the other. A diving board bends when you stand on it.
弯曲——一侧拉伸、另一侧压缩的组合。当你站在跳板上时，跳板会发生弯曲。
Shear – a sliding force that tries to cut through a material. Scissors apply shear to paper.
剪切——一种试图切断材料的滑动力。剪刀对纸张施加剪切力。
Torsion – a twisting force. Wringing out a wet cloth demonstrates torsion.
扭转——一种扭动的力。拧干湿布展示了扭转。
| Structural Element 结构元素 | Quick Visual 快速联想 |
|---|---|
| Beam 横梁 | Horizontal support, like a shelf bracket. |
| Strut 支柱 | Slanted support resisting compression, e.g. a roof rafter. |
| Tie 拉杆 | Slanted member in tension, stops walls spreading. |
| Truss 桁架 | Triangular framework – extremely strong and light. |
3. Mechanisms and Motion | 机构与运动
Mechanisms change the type, direction, or magnitude of motion. Drawing a simple flowchart of input–process–output helps embed these terms. Key motion types: linear, rotary, reciprocating, and oscillating – remember ‘LiRo ReOs’.
机构改变运动的类型、方向或大小。绘制简单的输入–过程–输出流程图有助于牢记这些术语。关键的运动类型：直线、旋转、往复和摆动——记住“LiRo ReOs”。
Linear motion – movement in a straight line. A train on a straight track.
直线运动——沿直线的运动。直轨上的火车。
Rotary motion – movement in a circle around a fixed point. A spinning wheel.
旋转运动——绕固定点做圆周运动。旋转的车轮。
Reciprocating motion – back-and-forth linear movement. A piston in a cylinder.
往复运动——来回的直线运动。气缸中的活塞。
Oscillating motion – swinging back and forth in an arc. A pendulum.
摆动——沿弧线来回摇摆。钟摆。
Lever – a rigid bar that pivots on a fulcrum to amplify force. Three classes: remember ‘FLE’ – Fulcrum, Load, Effort arrangement changes by class.
杠杆——绕支点转动的刚性杆，用于放大力量。三类：记住 ‘FLE’——支点、载荷、作用力的排列因类别而异。
Gear ratio = number of teeth on driven gear ÷ number of teeth on driver gear. Use the simple formula:
Gear ratio = Teeth (driven) / Teeth (driver)
A large ratio means more torque, less speed.
齿轮比 = 从动轮齿数 ÷ 主动轮齿数。使用简单公式：齿轮比 = 齿（从动）/齿（主动）。大比率意味着更大的扭矩和更低的速度。
4. Electronics and Circuit Basics | 电子与电路基础
Electricity is invisible, so analogy is your best friend. Think of voltage as electrical ‘push’, current as flow rate, and resistance as a narrow pipe that restricts flow. Always revise using the water-pipe model.
电是看不见的，因此类比是你最好的朋友。把电压想象成电的“推力”，电流想象成流速，电阻想象成限制流动的狭窄管道。始终借助水管模型来复习。
Voltage (V) – the energy per unit charge; the push that drives electrons. Unit: volt.
电压 (V)——单位电荷的能量；驱动电子的推力。单位：伏特。
Current (I) – the rate of flow of charge; measured in amperes (amps). Think ‘I–flow’.
电流 (I)——电荷流动的速率；以安培为单位。联想“I–流动”。
Resistance (R) – opposition to current flow; unit: ohm (Ω). More resistance dims the bulb.
电阻 (R)——对电流的阻碍；单位：欧姆 (Ω)。电阻越大，灯泡越暗。
Ohm’s Law: V = I × R. Use the triangle trick: cover the quantity you want, then multiply or divide.
欧姆定律：V = I × R。使用三角形技巧：盖住你想求的量，然后相乘或相除。
Series circuit – one loop; current same everywhere, voltage divides. ‘Share voltage, same current’.
串联电路——一个回路；电流处处相同，电压分配。“电压分配，电流相同”。
Parallel circuit – branches; voltage same across branches, current divides. ‘Share current, same voltage’.
并联电路——多条支路；各支路电压相同，电流分配。“电流分配，电压相同”。
Component symbols – draw them frequently. Use a mnemonic to remember: cell (long line positive), battery, lamp (circle with cross), switch, resistor (zigzag), LED (arrow pointing away).
元件符号——经常绘制。用助记法记忆：电池（长线为正）、电池组、灯泡（带叉的圆）、开关、电阻（锯齿形）、发光二极管（箭头朝外）。
5. Design Process and Communication | 设计过程与沟通
The design cycle is the engineer’s roadmap. CAIE emphasises iterative design: research, specification, idea generation, modelling, testing, evaluation. Turn it into a catchy phrase: ‘Research Specs Ideas Models Tests Evaluation’ – ‘RSIMTE’.
设计循环是工程师的路线图。CAIE 强调迭代设计：调研、规格、构思、建模、测试、评估。把它变成朗朗上口的短语：“Research Specs Ideas Models Tests Evaluation”——’RSIMTE’。
Brief – a clear statement of the problem or need. It’s your mission statement.
设计任务书——对问题或需求的清晰陈述。它是你的任务宣言。
Specification – a list of measurable requirements (size, cost, weight, materials). Use ‘MUST’ and ‘SHOULD’ to prioritise.
规格说明——可度量要求的列表（尺寸、成本、重量、材料）。用“必须”和“应该”来区分优先级。
Modelling – building a prototype or 3D representation to test ideas. Think ‘Model before make’.
建模——制作原型或三维表征来测试想法。记住“先建模后制造”。
Ergonomics – designing for human comfort and efficiency. The word comes from ‘ergon’ (work) + ‘nomos’ (laws).
人机工程学——为人类舒适和效率而设计。这个词源自“ergon”（工作）+“nomos”（法则）。
Anthropometric data – body measurements used to design products. Remember ‘Anthro- = human, -metric = measure’.
人体测量数据——用于产品设计的人体尺寸。记住“Anthro- = 人类, -metric = 测量”。
6. Manufacturing and Tools | 制造与工具
Workshop vocabulary can be visually anchored. Label a poster with tool names and hang it in your study space. Focus on types of motion, cutting tools, and joining methods.
车间词汇可以通过视觉来锚定。制作一张带工具名称的海报并贴在学习空间。重点掌握运动类型、切削工具和连接方法。
Marking out – transferring design dimensions onto the workpiece. Tools: scriber, centre punch, engineer’s square.
划线——将设计尺寸转移到工件上。工具：划线针、中心冲、工程师角尺。
Filing – removing small amounts of material with a file. Remember cross-filing and draw-filing.
锉削——用锉刀去除少量材料。记住交叉锉法和拉锉法。
Drilling – making a hole using a rotating drill bit. Always clamp the workpiece.
钻孔——使用旋转钻头制作孔洞。始终夹紧工件。
Tapping – cutting an internal thread inside a hole. Pair it with ‘die’ – cutting an external thread on a rod.
攻丝——在孔内切削内螺纹。与“板牙”配对——在圆杆上切削外螺纹。
Soldering – joining metals using a melted filler metal (solder) at lower temperatures. Unlike welding, base metals do not melt.
软钎焊——使用熔化的填充金属（焊料）在较低温度下连接金属。与焊接不同，母材不熔化。
| Joining Method 连接方法 | Keyword Memory 关键词记忆 |
|---|---|
| Permanent 永久 | Welding, soldering, adhesives – cannot easily separate. |
| Temporary 临时 | Nuts & bolts, screws, clips – designed to be dismantled. |
7. Energy, Power, and Efficiency | 能源、动力与效率
Engineering systems transform energy from one form to another. Master these terms by creating energy chain diagrams. Efficiency is always about minimising waste.
工程系统将能量从一种形式转化为另一种。通过绘制能量链图来掌握这些术语。效率总是关乎减少浪费。
Renewable energy – sources that replenish naturally: solar, wind, hydro. ‘Re-new-able = able to be new again’.
可再生能源——可自然再生的能源：太阳能、风能、水能。“可再生的 = 能够再次更新”。
Non-renewable energy – finite sources: coal, oil, natural gas. Think ‘Fossil fuels = once used, gone forever’.
不可再生能源——有限资源：煤、石油、天然气。联想“化石燃料 = 一旦使用，永远消失”。
Efficiency = (useful output ÷ total input) × 100%. Always less than 100% due to friction and heat loss.
效率 = （有用输出 ÷ 总输入）× 100%。由于摩擦和热损失，总是低于 100%。
Work done (J) = Force (N) × distance (m). Use the ‘W = F d’ mnemonic: ‘Work is Force times distance’.
做功 (焦耳) = 力 (牛顿) × 距离 (米)。使用“W = F d”助记：“做功等于力乘以距离”。
Power (W) = Work done (J) ÷ time (s). Power measures how fast work is done. Imagine two people lifting the same weight; the faster one has more power.
功率 (瓦特) = 做功 (焦耳) ÷ 时间 (秒)。功率衡量做功的速度。想象两个人举起相同的重物；快的那个人功率更大。
8. Safety in the Workshop | 车间安全
Safety terminology must become second nature. Turn every term into an ‘If… then…’ safety rule. The word ‘hazard’ means potential to harm; ‘risk’ is the likelihood of that harm occurring.
安全术语必须成为第二本能。把每个术语转化为“如果……那么……”的安全规则。“hazard（危害）”指潜在的伤害；“risk（风险）”指该伤害发生的可能性。
PPE (Personal Protective Equipment) – goggles, gloves, apron, steel-toe boots. ‘Protect Your Senses’ (eyes, hands, body, feet).
PPE（个人防护装备）——护目镜、手套、围裙、钢头鞋。“保护你的感官”（眼睛、手、身体、脚）。
Risk assessment – identify hazards, evaluate risks, decide on control measures. Steps: ‘Look, Judge, Control’.
风险评估——识别危害、评估风险、确定控制措施。步骤：“观察、判断、控制”。
Emergency stop – a red mushroom-shaped button that instantly cuts power. Located within reach of every machine.
紧急停止——一个红色蘑菇形按钮，可瞬间切断电源。位于每台机器可触及的范围内。
Ventilation – extraction of fumes and dust, e.g., when soldering or using adhesives. Remember ‘Vent = open airway’.
通风——排出烟雾和粉尘，例如在焊接或使用粘合剂时。记住“Vent = 打开气道”。
9. Engineering Drawing and CAD | 工程制图与计算机辅助设计
Drawing conventions allow engineers to communicate globally. Learn line types and projection methods. Treat orthographic drawing as a language with front, side, and plan views.
绘图规范让工程师能够全球沟通。学习线型和投影方法。将正投影图视为一种语言，包含前视图、侧视图和俯视图。
Isometric drawing – a 3D pictorial with lines at 30° to the horizontal. ‘Iso- (equal) metric (measure)’ – all axes equally foreshortened.
等轴测图——与水平线成 30° 线条的三维图示。“Iso-（相等） metric（测量）”——所有轴等距缩短。
Orthographic projection – 2D views (front, top, side) arranged systematically. Typically 1st angle (British) or 3rd angle (American). Year 8 CAIE normally uses 3rd angle: plan above front, side view to the side.
正投影——系统排列的二维视图（前、顶、侧）。通常分为第一角（英式）或第三角（美式）。Year 8 CAIE 通常使用第三角投影：俯视图在前视图上方，侧视图在侧面。
Scale – ratio of drawing size to real size. Full scale 1:1, reduction 1:2, enlargement 2:1. Remember ‘Draw : Real’.
比例——图纸尺寸与实际尺寸的比率。足尺 1:1，缩小 1:2，放大 2:1。记住“图纸：实物”。
CAD (Computer-Aided Design) – software to create precise 2D or 3D models. CAM (Computer-Aided Manufacture) uses those models to control machines.
CAD（计算机辅助设计）——用于创建精确二维或三维模型的软件。CAM（计算机辅助制造）利用这些模型控制机器。
10. Control Systems and Programming | 控制系统与编程
Modern engineering includes control. Even basic flowcharts introduce the vocabulary of sequences, decisions, and feedback. ‘Input–Process–Output’ is the control mantra.
现代工程包含控制。即使是基础流程图也引入了顺序、判断和反馈的词汇。“输入–处理–输出”是控制的要诀。
Microcontroller – a small computer on a single chip (e.g., PIC, Arduino). It reads inputs, runs a program, and controls outputs.
微控制器——单芯片上的小型计算机（例如 PIC、Arduino）。它读取输入、运行程序并控制输出。
Sensor – detects physical changes: LDR (light), thermistor (temperature), microswitch (touch). Think ‘Sensor senses’.
传感器——检测物理变化：光敏电阻（光）、热敏电阻（温度）、微动开关（触碰）。联想“Sensor 感应”。
Actuator – an output device that creates movement: motor, buzzer, LED. ‘Actuator acts’.
执行器——产生运动的输出设备：电机、蜂鸣器、LED。“Actuator 执行动作”。
Flowchart symbols: oval (start/end), rectangle (process), diamond (decision), arrow (flow). Draw them whenever you plan an algorithm.
流程图符号：椭圆（开始/结束）、矩形（过程）、菱形（判断）、箭头（流向）。每次规划算法时都绘制它们。
Feedback – using sensor information to adjust output. A thermostat switching off the heater at a set temperature is a feedback loop.
反馈——利用传感器信息调整输出。恒温器在设定温度关闭加热器就是一个反馈回路。
Published by TutorHao | Engineering Revision Series | aleveler.com
更多咨询请联系16621398022（同微信）
屏轩国际教育cambridge primary/secondary checkpoint, cat4, ukiset,ukcat,igcse,alevel,PAT,STEP,MAT, ibdp,ap,ssat,sat,sat2课程辅导，国外大学本科硕士研究生博士课程论文辅导