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xpz-wdy: 金币+20, 翻译EPI+1, ★★★★★最佳答案, 谢谢大神 2016-01-27 12:28:45
你这是论文还是标书？是论文就不用将来时了。因为不确定，所以时态就不改了：
Halobutyl rubber is the main choice of the faceblank materials for respirators due to the good barrier property originated from the dense side methyl groups in the predominant isobutylene units which can effectively prevent other molecules from thermal motion. However, great internal friction originated from the methyl groups will also result in low resilience, and finally bring disadvantages to respirators during its manufacture and usage. Blending with NR is an alternative way to improve the resilience. Unfortunately, it will decrease the resistance of the blend unavoidably due to 【due to 不能引导从句， 改为 because 或者 since】 the NR offers rather low resistances to the penetration of chemicals.
Since the barrier property is depended【改为dependent】 on the diffusion behavior of permeant in material, the sulfur mustard, a target permeant commonly used in personal protection field,【逗号去掉】 through the blends of CIIR and NR will 【如果是论文就不用将来时了，下同】be studied in this project. The unsteady diffusion equations will be obtained based on Fick’s second law and standard spot-disc breakthrough time test, the diffusion mechanism will be interpreted based on the combination of dynamic adsorption analysis and random walk theory, and the influence of structure and temperature on the diffusion behavior will be also investigated. This study will provide necessary parameters and theoretical basis for future material design for faceblanks. |
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