引起矿山地区环境恶化的主要原因有历史因素、政策、经济技术、地方保护主义及环保意识差等。
Historical policy, economy & technology, awareness of environment protection are the main factors to cause the problems.
介绍了EDI技术的结构、原理、经济技术特点及在超纯水制备应用中的参数和影响因素，并提出了解决的方法。
The construction, elements, characteristic of economy and technology, parameter and factor in application of ultra pure water of EDI are introduced.
阐述了海南与新加坡经济技术合作的可行性，以及两地经济合作中产业因素对接的契合点。
It elaborates the possibility of economic and technical cooperation and the combining points of industry factors in the course of economic cooperation between Hainan and Singapore.
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