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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Somewhat sceptical of his son's newfound determination to become Charles Atlas, the father nevertheless followed the teenager over to the weight-lifting department, admiring a set of weights.

儿子最近决心要成为Charles Atlas，对于这个决定，父亲多少有点怀疑，不过他还是陪着儿子去了举重器材商店，在那里他们看上了一套举重器材。

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To avoid the excessive subjectivity influenced by the conventional determination methods of weight factor, the rough set was introduced to the solution of the weight factor in the extenics evaluation.

为了避免传统的权值确定方法所带来的主观性影响，将粗糙集理论引入可拓权重系数的求解过程中，使权系数问题转化为属性重要度评价问题。

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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.

BBC: Czech leader struggles to defy EU

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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