CAD Terms English-Chinese Reference Table
A-E
Absolute Coordinates： 绝对坐标
A function within a CAD program that requests that a user enter the exact X, Y, Z coordinates for a point or block.
Analog： 模拟
A data transmission system which is capable of tracing a signal in a continuous method, from the start of the signal to the end. Analog signal data is easily distorted and is not as reliable as digital data.
Arc： 弧
A curve drawn in a CAD program with a specified radius, that has a start and end point, which can be defined as clockwise (CW) or counterclockwise (CCW).
Bitmap： 位图工具
A type of data used in graphics programs which requires a large amount of disk storage due to the number of individual pixels which need to be stored.
Block： 块
A group of similar drawing symbols in a CAD program which have been treated as a single object. Blocks can be created, saved, and inserted into a drawing, and are often easier to manipulate than individual drawing symbols.
C-H
CADD： 计算机辅助设计和制造
Acronym for Computer Aided Design and Drafting (CADD). CADD is a type of software used in the design and engineering fields to create precise two and three dimensional drawings.
Crosshairs： 十字准线
Two parallel, orthogonal lines within a CAD program which are normally used as a pointing device. The lines meet at a point in the center of the screen and can be used to indicate a point or set of coordinates.
Database： 数据库
A file storage system within a CAD program that contains information associated with one or more drawings. For example, a database can store information about objects in a drawing such as size, color, type, etc.
Drawing： 图纸
A completed CAD drawing which represents an accurate two or three dimensional representation of an object.
Element： 元素
An individual item within a drawing which can be manipulated independently. Examples of elements include lines, circles, arcs, text, etc.
I-N
Object Snapping： 对象捕捉
A process within a CAD program which allows a user to create or modify shapes and objects with a high level of precision. Object snapping can be used to snap points or objects to a specific location, or to a set of coordinates.
Output： 输出
The process of printing or displaying a drawing created in a CAD program. Output can be in the form of an image, a printed drawing, or a PDF file.
Points： 点
Individual pieces of data within a CAD drawing which represent the location of an object on the screen. Points can also be used to connect lines and arcs, creating more complex shapes.
Raster： 栅格
A type of data used in graphics programs to represent an image on the screen. Raster images are made up of individual pixels which are arranged in a grid formation.
S-Z
Scaling： 缩放
A method of changing the size of an object in a CAD drawing. Scaling can be done automatically by the program, or manually by the user.
Selection： 选择
The act of choosing a specific object or objects in a CAD drawing. Objects can be selected with a pointing device such as a mouse, or by manually entering coordinates.
Text： 文本
Words or phrases that can be inserted into a CAD drawing that can be manipulated and formatted to a user’s preference.
Viewport： 视口
A section of the screen within a CAD program where a drawing can be viewed and manipulated. Each viewport is assigned its own set of Gridlines and Scale.
Wipeout： 擦除
A command within a CAD program which removes selected objects, or parts of objects, from a drawing, without actually deleting them. Wipeouts can be used to hide an object or area of a drawing temporarily.
