In this paper, based on flame propagation a mathematical model of formation and desorption of unburned hydrocarbon in top-land crevice of spark ignition engines has been established.

基于火焰传播过程建立了火花点火发动机顶环岸间隙处未燃碳氢生成和释放过程的数学模型，并利用模型进行了顶环岸间隙处未燃碳氢生成过程的数值模拟计算。

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Starting Nov. 23, a limited-edition version of the Flame Red Nintendo 3DS will come with Super Mario 3D Land pre-installed on the system.

ENGADGET: Nintendo bundles red 3DS with Super Mario 3D Land starting November 23rd