This article presented the history of machine translation R&D in Institute of Scientiifc and Technical Information of Chin(ISTIC), and showed the evaluation technical report from ISTIC for the 11th China Workshop on Machine Translation (CWMT’2015). During the CWMT’2015, ISTIC participated in the Uyghur-Chinese, Mongolian-Chinese and Tibetan-Chinese machine translation tasks. This article describes the implement framework of machine translation system of ISTIC. We also described the key techniques and analyzed the experimental results over the evaluation data.%中国科学技术信息研究所（ISTIC）机器翻译研发工程历史悠久，几经变迁。本文在回顾ISTIC机器翻译发展历史的基础上，介绍了最近参加第十一届全国机器翻译研讨会机器翻译评测（简称CWMT’2015）系统的具体表现。CWMT’2015评比中， ISTIC 参加了维汉、藏汉、蒙汉三个机器翻译评测项目。本文阐述了本单位机器翻译系统的实现框架以及实施细节，并分析了它们在评测数据上的性能表现。
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