本文采用线性支出系统和广义线性支出系统，建立了我国城市居民家庭支出结构的数学模型。
With the linear expenditure system and extended linear expenditure system, we build, in this paper, mathematical models of the urban household expenditure structure in China.
城市滨水景观直接关系到城市结构、城市生态环境及城市居民的生活质量。
Urban waterfront landscape directly affects the urban structure, urban ecological environment and the life quality of urban residents.
结果表明，城市居民家庭生活用水结构正在从以水龙头、洗衣机用水为主的结构向以淋浴、冲厕用水为主的结构转变；
The main structure of urban household water usage was in the process changing from water tap and washing machine towards shower bath and toilet washing.
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