CAD基编辑命令(国外英语资料).doc

CAD基编辑命令(国外英语资料) The basic editing commands for CAD Point, line, circle, arc command 1. drop-down menu: drawing / point / (single / multiple) Command: POINT (PO) Effects: used to draw auxiliary marker points, feature points, and callout points, but the size and form of points are controlled by the DDPTYPE command or system variables PDMODE and PDSIZE 2. drawing menu: straight line Command line: LINE Action: 1) specify the first point: specify the point, or press ENTER to continue drawing from the previous line or arc 2) specify the next point, or close C/, and abandon U]: Continues to extend it from the endpoint of the recently drawn straight line If an arc is recently drawn, its end point will be defined as the starting point of the new line, and the new line will be tangent to the arc close the starting point of the first line as the endpoint of the last line segment and form a closed segment ring. After drawing a series of lines (two or more two), you can use the closing option abandon the line closest to the line drawn in the line 3. draw menu: circle Command line: the CIRCLE command provides six ways to draw a circle: Draw circles according to the center of the circle and radius Specify the center of the circle, or [three (3P) / two-point (2P) / tangent, tangent, radius (T)]: enter the center of the circle Diameter (D) / radius, input radius Draw the circle according to the center of the circle and the diameter Specify the center of the circle, or [three (3P) / two-point (2P) / tangent, tangent, radius (T)]: 2P The first point in diameter: Second points above the diameter: draw the circle according to three points Specify the center of the circle, or [three (3P) / two-point (2P) / tangent, tangent, radius (T)]: 3P The first point in diameter: The first point in diameter: Third points above the diameter: Draw a circle with a given radius and tangent to the two entities Specify the center of the circle, or [three (3P) / two-point (2P) / tangent, tangent, radiu