[{
  "type": "AlternatorSvg",
  "title": "发电机",
  "template": "<ellipse id=\"c1\" cx=\"50\" cy=\"50\" rx=\"35\" ry=\"35\" fill=\"none\" :stroke=\"svg_color\" stroke-width=\"2\" transform=\"translate(-50,-50)\"></ellipse><path id=\"l1\" d=\"M30,50 C30,44 34,40 40,40 46,40 50,44 50,50 M50,50 C50,56 54,60 60,60 66,60 70,56 70,50 \" fill=\"none\" :stroke=\"svg_color\" stroke-width=\"2\" transform=\"translate(-50,-50)\"></path>",
  "props": ["svg_color"],
  "default_color":"#00FF00",
  "priview_img":"/AlternatorSvg.png"
}, {
  "type": "ArrowDownSvg",
  "title": "箭头向下",
  "template": "<polygon  points=\"0,-8 5,0 10,-8\" :fill=\"svg_color\" :stroke=\"svg_color\" stroke-width=\"2\" transform=\"translate(-5,0)\"></polygon>",
  "props": ["svg_color"],
  "default_color":"#00FF00",
  "priview_img":"/ArrowDownSvg.png"
}, {
  "type": "ArrowUpSvg",
  "title": "箭头向上",
  "template": "<polygon  points=\"0,8 5,0 10,8\" :fill=\"svg_color\" :stroke=\"svg_color\" stroke-width=\"2\" transform=\"translate(-5,0)\"></polygon>",
  "props": ["svg_color"],
  "default_color":"#FF0000",
  "priview_img":"/ArrowUpSvg.png"
}]