不定期地
Good articles recommendation and appraisal aperiodically. 不定期推荐和评论好的英文精品文章。
Open classes: New type of class brought by the teachers aperiodically. 代表公开课程:不定期由新教练为大家展示最新课程。
A residency is aperiod of hospital training for medical school graduates. 一段实习期是指允许医学研究生在医院培训实习的时间。
Aperiodically audit the suppliers' HSE implement situations and push them to give the improvements. 不定期地对供应商的HSE进行稽核并要求做出改善措施.
Set up and perfect users" records, and track, visit vehicle plant and customers periodically or aperiodically. 建立健全用户档案,紧密跟踪,定期或不定期回访整车厂和客户。