地幔流体是当今地球科学研究中的前沿领域之一，具有重要的研究价值。
The study of mantle fluid is one of the frontiers in Earth science, and is of great significance.
微执行器是微机电系统的核心部件，应用范围广泛，具有重要的研究价值。
Micro actuator is the kernel part of MEMS, with wide application range and important research value.
北美新华文文学，作为海外华文文学中区域性和阶段性特征都很鲜明的文学类型，具有重要的研究价值。
The study of new overseas Chinese writing in North American, with very distinctively regional and transitional features among this writing, merits our efforts.
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