drawing aids meaning in Chinese
辅助绘图命令
绘图辅助工具
Examples
- Given the surviving records for all manner of other optical systems and mechanical drawing aids , the absence of evidence for the hockney projector is difficult to explain
其他光学系统与绘图辅助工具的记录，到今天都还留存了不少，为何唯独缺乏霍克尼投影设备的证据，显然很难解释。