The paper is directed at how to enhance the infrared extinction ability and the burning speed of the burning fast smoke agent.

围绕富碳燃烧型快速发烟剂的红外消光能力和燃烧成烟速度，进行理论分析和试验对比验证。

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The companies have mounted extensive efforts to curb youth smoking and some of the billions the companies paid in a nationwide court settlement have been directed at keeping minors from starting to smoke.

WSJ: NY Cancer Society says sweet smokes aimed at kids