The concept, content, functionality of tourism consulting industry at home and abroad have been systematically studied.
系统调研了国内外关于旅游咨询概念、内涵、功能等基本理念的论述；
The effects of various parameters of temperature, time and CNO- content on the quality of codiffused layer have been systematically studied.
系统研究了温度、时间、氰酸根含量等参数对共渗层质量的影响。
The content and the distributing law of the microelements in lower Paleozoic era stone coal in South Qinling have been systematically studied.
对南秦岭早古生代石煤的微量元素含量、分布规律等进行了详细系统的研究。
应用推荐