第二，理论基础研究。

Second, theoretic basis of this research.

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本文从安全法学理论基础研究概况；安全法学理论基础问题研究的意义；

This paper discusses the key problems about the foundry theories research of safety jurisprudence;

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包括工程陶瓷材料难加工的理论基础研究，磨削机理，超精密磨削，高效磨削加工等方面的研究动态。

The main subjects for ceramic machining researches include the hard-difficult machining theory, the grinding mechanism, precision grinding and high efficiency grinding.

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