单词parallel ruler
n.: 平行线尺(由两把相连接的尺子组成)网络: 平行尺;平行规;帄行尺
平行线尺(由两把相连接的尺子组成):
a device for drawing lines that are always the same distance apart, consisting of two connected rulers
生代
薄片平移导尺
平行线规
平行尺