在建造和设计WFI系统的时候需要考虑三个系统区域：WFI纯化单元，蒸馏系统和水贮存系统。
There are three system areas to be considered in the construction and design of the WFI system: the WFI purification unit, the distribution system, and the storage system for the water.
贮存化学品的区域是专门设计的，在溢出时可防止其对环境的损害，该区域能设计如盆状的池子。
Chemicals are stored in dedicated areas which are designed to prevent negative impact on environment in case of spillage.
对西安市区域内雨水下渗和贮存、实现雨水资源化及其利用等方面做了探索，并根据实际情况对西安市雨水资源化的必要性、可能性及可持续性进行了分析。
The writer probes into permeation and storage of rainwater, and its further utilization as a resource, and also analyses the necessity, possibility and sustainability of it in Xian city.
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