D solid modeling is the important application of Computer Aided design in the field of mechanical design.
三维实体造型，是计算机辅助设计在机械设计领域的重要应用。
The software system for 3-d seismic data acquisition pIan and design is mainly used in computer aided design of 3-d seismic exploration.
三维地震勘探数据采集规划设计软件系统主要用于三维地震勘探规划的计算机辅助设计。
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