The ageing of rigid polyvinyl chloride (R-PVC) aggravated by nitric and sulfuric acids was studied by IR, UV Spectroscopy, thermo-analysis and molecular weight determination.

用红外与紫外光谱法、热分析和分子量测定研究了硬聚氯乙烯在硝酸和硫酸中的老化。

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And, if a fit parent's decision of the kind at issue here becomes subject to judicial review, the court must accord at least some special weight to the parent's own determination.

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Either he has come to the realisation that he cannot delay signing the treaty until the UK election, that even his formidable determination will buckle under the combined political and diplomatic weight of Europe.

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Anyhow, I am continuing on Weight Watchers and loving every moment of my new-found strength and determination. 17 months and going strong at 88.8 lbs. less!

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