has been systematically studied 进行了系统研究
The sulfur tolerance of nickel metal catalysts in aromatic hydrogenation has been studied systematically on the base of nickel active unit in this paper.
以镍为活性组元，系统地研究了镍基芳烃加氢金属催化剂的抗硫性能。
Occupational burnout is a new domain that researchers focus on. Occupational burnout among counselors in foreign countries has been studied systematically.
职业耗竭是学术界关注的一个新热点，国外心理咨询师的职业耗竭问题也得到了比较系统的研究。
Deployment dynamics analysis of space deployable truss has been studied systematically in this paper, and a computer program has been designed for deployment dynamics simulation.
论文对空间可展开桁架的展开动力学过程进行了系统的分析研究，设计了用于展开动力学仿真的计算机程序。
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