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function of urban ecological system | |||
urban ecosystem Towns and cities viewed as ecosystems, having an input of matter and energy, recycling within the system, and an output of matter and energy into the surroundings (城镇和城市被视为生态系统,包括物质和能量的输入,在系统内循环,以及物质和能量输出到周围环境。) | |||
urban ecosystem | |||
urban ecological system |
城市 生 态系统 : 5 phrases in 2 subjects |
Earth sciences | 1 |
Technology | 4 |