domestic vacancy

With the industrial application, domestic industrialization of butadiene hydrogenation catalyst is realized, and domestic vacancy in this area is filled.

通过工业化应用，实现了丁二烯加氢催化剂国产化，填补了国内空白。

The system has complete performance and high intelligence. The technique has high practicability and economical signification, and fills the domestic vacancy.

本系统功能完备、智能化程度高，填补了国内空白，具有较大的实用价值和经济意义。

According to the literature, domestic study of TNA presently focuses on macro theories, which turns out a vacancy in study of operational tools and models.

目前，国内文献对企业培训需求分析的研究主要集中在宏观理论上，而忽视了对实际操作工具和模型的研究。