프로페셔널영어6 11. Material types A. Metals and non-metals Engineering materials can be divided into: ■ metals - examples of metallic materials are iron (Fe) and copper (Cu). ■ non-metals - examples of non-metallic materials are carbon (C) and silicon (Si). As iron is such a widely used material, metals can be divided into: ■ ferrous metals - those that contain iron ■ non-ferrous metals - those that do not contain iron. *fer·rou.. 2023. 3. 13. 9. Area, size and mass A. Area The textbook extract below looks at different aspects of area. Dimensions of wires and cables The sizes of electrical wires are specified by a number which gives an area in square millimetres. For example, in a home, a 6 mm² wire may be specified to supply an electric oven in a kitchen. This number gives the cross-sectional area of the conductor. Increasing the cross-sectional area allow.. 2023. 3. 6. 8. Numbers and calculations A. Decimals and fractions A manufacturer is thinking about giving both metric measurements (for example, millimetres) and imperial measurements (for example, inches) in its product specifications. One of the company's engineers is giving his opinion on the idea in a meeting. 'One problem is, when you convert from metric to imperial you no longer have whole numbers - you get long decimal numbers... 2023. 2. 20. 7. Dimensional accuracy A. Precision and tolerance It is impossible to produce components with dimensions that are absolutely precise, with sizes exactly the same as those specified in a design. This is because all production processes are imprecise to a certain extent. Therefore, the sizes of several components produced from the same design will vary (differ). Although the variation may only be a few hundredths of a m.. 2023. 2. 20. 6. Dimensions of circles A. Key dimensions of circles An engineer is giving a training course to a group of technical sales staff who work for a tyre manufacturer. During the talk, she mentions a number of dimensions relating to circles. 'Obviously, the outside edge of a tyre forms a circle, as you can see in this simple diagram. The outer circle in the diagram is the outside of the tyre, and the inner circle - the circ.. 2023. 2. 20. 1. Drawings A. Drawing types and scales *scale [skeɪl] 1.명사 (특히 다른 것과 비교해서 본) 규모[범위] (→full-scale, large-scale, small-scale) 2.명사 (측정용) 등급 (→Richter scale, sliding scale, timescale) 3.동사 격식 (아주 높고 가파른 곳을) 오르다 4.동사 비늘을 치다[벗기다] 5. pl. (美 또한 scale scales) 저울 6. C(지도도형모형의) 축척[(축소/확대) 비율] Both plans are drawn to the same scale. 그 설계도는 둘 다 동일한 비율로 그린 것이다. CAD [kæd] (computer-aided design) 컴퓨터 이용 설계 - General agre.. 2023. 2. 5. 이전 1 다음
