None 人民 19 世纪风格 户外 Political cartoon depicting differences between Anglo-Catholic and Roman Catholic religion
These are images from my 2010 travels I've converted with this command: for i in *.jpg; do convert "$i" "`basename "$i" .jpg`.png" && autotrace -despeckle-level 15 -color-count 6 -input-format PNG -output-file "`basename "$i" .jpg`".svg -output-format svg "`basename "$i" .jpg`.png"; done 照片 区域 捐赠 叙利亚和约旦之间的边界
It shows graphically the relation between polar and phasial voltage in a Three-phase electric power system 极地和 phasial 电压之间的关系