If the element being tested with tolerance requirements is an axis, centre line or symmetrical plane, the arrow and datum symbol should be aligned to the dimension line of that element.
当被测要素为轴线、中心线或对称平面时，指引线的箭头和基准符号应与该要素的尺寸线对齐。
After the subroutine parameter is given the origin number, the plotter controlled by computer can draw out automatically extension line, dimension line, arrowhead and write dimension figures.
当给子程序的参数赋以初值后，由计算机控制自动绘图机绘制出尺寸界线、尺寸线、箭头和注写尺寸数字。
If the element being tested with a tolerance requirement is a contour line or surface, point the arrow and datum symbol to the contour line or surface, and keep it away from the dimension line.
当具有公差要求的被测要素为线或平面时，将指引线箭头和基准符号指在线或平面上，且必须与尺寸线错开。
Dimension line with label that automatically changes to match length.
带自动匹配长度的标签的尺寸线。
Dimension line with label that automatically changes to match length. Text position and extension lines are adjustable.
带自动匹配长度的标签的尺寸线。文本位置和延长线是可调整的。
Dimension line with label that automatically changes to match length. Text position and extension lines are adjustable.
带自动匹配长度的标签的尺寸线。文本位置和延长线是可调整的。
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