The catalyst had high activity and high selectivity in esterification of phthalic anhydride with isoamyl alcohol.
该催化剂对邻苯二甲酸酐和异戊醇的酯化活性高，无副反应。
The full enjoyment of human rights also required the elimination of double standards, selectivity and politicization.
充分享受人权还需要排除双重标准，选择性和政治化。
With the heighten of airspeed, the translation of toluene was depressed, and the selectivity of pxylene was increased.
反应空速提高，甲苯转化率降低，对二甲苯选择性增加。
As the kernel of the 2thorder cyclic statistics variables theory, the spectrum relativity and frequency selectivity are investigated.
重点研究了二阶循环统计量的谱相关特性和频率选则性。
In light of this, the paper discusses the influence of accrual of provisions on accounting information from the perspective of selectivity of system.
本文着重从制度的可选择性论述其对会计信息的影响。
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