The economical volume of rainwater storage basin of different runoff yield area were calculated by converting area of residential districts with different scale and component.
2
针对目前大中城市居民生活小区停车难的问题，设计了一种经济型立体车库，介绍了其控制系统。
An economic solid garage is designed to solve the difficulty of parting in residential area in big cities, with is control system introduced.
3
家里缺点日用品什么的，周围几个小区的人都上我们这小店顺手就买了，既经济又实惠，还方便。
The people whose family lack of some convenience goods around the quarters are likely to come to our shop to buy in passing because it is economical, substantial and convenient.
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