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- Tourism is one of the main causes of non-polluting ecological impact. 旅游是产生非污染生态影响的一个重要方面。
- Relating to or being concerned with the ecological impact of altering the environment. 有关环境的与改变环境而产生的生态影响有关的
- This paper aims at introducing the progress in research on ecological impact of urban landscape structure through the best available and current literatures, foreign and domestic. 本文考察了中外学者近年来就城市景观的生态效应所作的理论和实证研究，包括景观要素与格局及土地利用/土地覆被对城市动植物群落、气候、水文、土壤等造成的影响。
- Because forestland becomes major source of the increment of the urban land and farmland, the ecological impact of urbanization on this urban lake watershed is remarkable. 流域的城市化具有方向性。城市的快速扩展对林地、灌草、水体等城市湖泊地区的自然生态系统产生显著影响。
- non - pollution ecological engineering 非污染生态工程
- Application of low Mooney viscosity,non pollution type NBR to thin camber sponge rubber was studied. 研究低门尼粘度、非污染型丁腈橡胶在薄型曲面海绵胶料中的应用。
- Retrospect and prospect of pollution ecology. 污染生态学研究的回顾与展望。
- The direction of the perforator development was more penetration depth, concentrated hole, large hole diameter and non pollution blasting. 最后提出射孔弹应向高穿深、高孔密、大孔径、无污染的方向发展。
- The quenchant has many advantages,such as apt to dissolve in water,non toxic,smellless,and smokeless and non pollutant in quenching processing. 对不同浓度下的淬火工艺性能也进行了研究。
- Frontiers and Prospeels of the Study on Pollution Ecology. 污染生态学的研究前沿与展望。
- The Chinese ecologists we spoke to all acknowledged the negative ecological impacts caused by Louisiana crayfish. 我们所交谈的中国生态学家都承认路易斯安那州小龙虾对生态所引起的负面影响。
- In this paper, the ecological impacts of regional vegetation restoration were predicted in an arid valley of Minjiang River, SW China. 为了评估区域植被恢复的生态风险，根据岷江上游干旱河谷区域植被恢复格局的设计结果，预测了区域植被恢复对生态安全的影响。
- Its developing orientation can be summarized as Less or non pollution, wasted energy, oxidation and decarburization, distortion, quality dispersion, hand labour, at last less or non reject. 其主要方向是少无污染、少无浪费(能源)、少无氧化、少无脱碳、少无畸变、少无质量分散、少无人工、少无废品。
- To mitigate the ecological impacts on terrestrial habitats, compensatory planting of not less than 3.35 ha shall be implemented within the site limit. 为减轻对陆上生境造成的生态影响;须在工地界线内进行不少于3.;35公顷的补偿种植。
- The ecological impacts of the Nujiang River hydropower development have been intensively debated in China in recent years. 开发蕴藏丰富的怒江水电资源在全国能源格局中占据重要地位。
- Ecological impact of introduced species 引进种的生态影响
- In the same time, the ecological impacts of the dam's construction are a long time's program and the mechanism of it is also complexity and levity. 由于大坝建设对于生态环境的影响是一个长期的作用过程，其作用机制也是复杂多变的。
- This non sequitur invalidates his argument. 他不根据前提推理因而论证无效。
- Is the water polluted at source or further downstream? 河水是在源头还是在流出之後受到污染的？
- The atmosphere of the city is very much polluted. 那个城市的空气受到严重污染。
