Duplication of bands in this region is also shown by trifluoropropyne and perfluoro 2 - butene.

三氟丙炔和全氟丁烯 -2 在这个区域也出现双重谱带.

辞典例句

Duplication of bands in this region also shown by trifluoropropyne and perfluoro 2 - butene.

三氟丙炔和全氟丁烯 -2 在这个区域也出现双重谱带.

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The mass fraction of n - butene in mixed C 4 from catalytic cracking after etherized was approximately 40 %.

醚化后的催化裂化混合C4中含有质量分数约为40%的正丁烯,是生产丙烯的优质原料.

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The copolymer of propylene with a small amount of butene was prepared by heterogeneous Ziegler ? Natta catalyst.

用负载型Ziegler- Nata 催化剂合成了丙烯同少量丁烯的共聚物,考察了单体进料比对催化活性的影响,发现此体系存在“共单体效应”.

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