longadj.长的；冗长的；久的；长音的adv.长期地；久地；用于名词后强调某事发生在某整段时间v.渴望n.长时间；长音节；囤积商品者long day全天班

1. By technical renovation the pump is able to run smoothly for a long period of time.
   通过技术改造，使液氨输送泵能够长周期平稳运行。
2. The measures and methods of long cycle benign use of continuous casting crystallizer are elaborated in this article.
   阐述了实现结晶器长周期良性使用的措施及方法。