Engineering drawing is considered as the language of engineering and technological research field.
工程图样被称为工程技术界的语言。
Extended real-time systems and spatial reasoning are two emerging areas of current scientific and technological research, both play an important role in the theory and engineering application.
扩充的实时系统和空间推理是当前的两个新兴领域，在理论及工程应用上都有重要作用。
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