简介静电电晕放电、刷形放电、火花放电的特点及静电引燃能量。
This paper gives a brief introduction about characteristics of electrostatic discharging, brush discharging, spark discharging and the igniting power of electrostatic.
可免费下载的矢量文件包括：矢量图标、矢量图案、矢量漩涡、花形图案、背景图案、墙纸、Illustrator笔刷等等。
Free downloadable vector files include vector Icons, vector patterns, vector swirls, flourishes, backgrounds, wallpapers, Illustrator brushes, and many more.
这一步操作很简单，只需将所有屋顶用多边形工具选出，然后用笔刷工具把它们涂白。
This step simply involved selecting each section of the roofs with the polygonal tool and painting them white with the brush tool.
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