"农村新能源开发与节能关键技术研究"项目——课题一/子课题:北郎中新村太阳能热水系统设计
"농촌신능원개발여절능관건기술연구"항목——과제일/자과제:북랑중신촌태양능열수계통설계
Research on key technology of household wind-water-solar power generation in rural areas
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