The line type of CAD was defined by line type file, which can be transformed by linesymbol compare table.
CAD中线型通过使用线型文件来实现，转换时通过线符号对照表可实现线符号的对照转换。
2
The second—which I won’t use in this text—is introduced by the symbol // and continues up to the end of the line.
第二种格式我没有在这段程序中使用，它由符号 // 开始，并且持续到这一行的结束。
3
As in the picture, the athlete is running, with a determined spirit, towards the finishing line in order to obtain the gold medal, considered as the symbol of success for any sportsman.