1. It is the only periodical reporting welding equipment in China. 是国内唯一报导焊接设备的专业期刊。
2. Starting from the concept of knowledge management, this paper makes some researches on the periodical management in libraries. 文章从介绍知识管理的概念内涵入手对图书馆的期刊知识管理进行了研究。
3. Conclusions : The periodical examinations of EEG could reflect functional condition of cerebral cortex and heighten clinical diagnostic rate and cure rate. 结论：定期的脑电图检查，可及时反映大脑皮层功能状态，提高临床的诊断率和治愈率。
英英解释
n.
1. a publication that appears at fixed intervals
2. happening or recurring at regular intervals
