第三种形式的非热逸过程叫做光化学逃逸，只见于火星，但土卫六也可能存在这种现象。
A third nonthermal process known as photochemical escape operates on Mars and possibly on Titan.
光化学烟雾和大气臭氧形成的重要前体物之一——非甲烷烃(NMHC)的排放受到研究者的热切关注。
As one important predecessor of photo-chemical smog and ozone, non-methane hydrocarbon's (NMHC) emission is paid great attention.
本文通过光化学产物分析了PM MA (PQ)材料的光反应过程，建立了适用于该材料的非局域扩散模型。
By analyzing the photochemical process of PMMA (PQ) photopolymer materials in detail, we present a non-local diffusion model in this thesis.
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