超稳y分子筛的水热稳定性、抗钒性能和焦炭选择性都优于传统的沸石，适合作为渣油FCC催化剂的活性主体。
For FCC resid processing, USY zeolite is perferred because of its superior hydrothermal stability, vanadium resistance and coke selectivity compared to conventional zeolites.
初步探讨了第二代超分子环糊精键合硅胶（CDS）对酚类化合物的微量富集的性能，并讨论了CDS的富集机理。
In this paper, the trace enrichment character of CDS has been examined, and the enrichment mechanism of CDS is also studied.
随着高分子合成化学和高分子设计理论不断取得新的进展，成为高性能超塑化剂领域的研究热点。
Now with the development of polymer chemistry and polymer synthesis design theory, polycarboxylic superplasticizers have been the hotpot of the concrete superplasticizers.
随着高分子合成化学和高分子设计理论不断取得新的进展，成为高性能超塑化剂领域的研究热点。
Now with the development of polymer chemistry and polymer synthesis design theory, polycarboxylic superplasticizers have been the hotpot of the concrete superplasticizers.
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