城市绿地系统是城市复合生态系统中自然子系统的重要组成部分。
Urban green space system is an important component in complex natural ecosystems of subsystems.
本项研究分别分析了自然生态子系统、农业生产子系统和工业生产子系统的能流，最后将其综合到一个描述该地区能流分析结果的总图。
We have analysed the energy flow of the natural subsystem, agricultural subsystem and industrial subsystem in this island respectively and integrated these in an overall diagram of energy flow.
设计和实现了汉语数据库自然语言查询接口系统（IDCQ），系统包括正则分词子系统和对象语义解析子系统；
The design and implementation of the Interface for Database Query in Chinese (IDCQ). The system includes regular word segmentation subsystem and object semantic analysis subsystem.
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