以下为句子列表：
英文: A medium-thick shelterbelt can reduce wind velocity by more than 10 percent to a distance of 20 times the tree height on the leeward side and three times the height to the windward.
中文: 中等厚度的防风林在背风侧可在20倍于树高的距离而在迎风侧则在3倍于树高的距离上减小风速10%以上。
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英文: Abstract: The park design is about the renovation and enlargement based on an old shelterbelt in the suburb.
中文: 摘要:这是一个依托城郊老旧防护林带进行更新扩建的公园设计。
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英文: As an important part of forestry eco-engineerings, farmland shelterbelt is significant to control desertification, improve farm production, establish new ecological balance, and develop regional economy.
中文: 摘要作为林业生态工程的重要组成部分，农田防护林在控制风沙乾旱、提高农业生产水准、建立新的生态平衡、发展区域经济等方面发挥著显著作用。
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英文: Chins have implemented Natural Forest Protection Project, Grain for Green Program, Fast-growing and High-yielding Progrm, and Shelterbelt Forestry Project etc. in succession since the year of 1998.
中文: 摘要1998年以后，国家相继实施了天然林保护工程、退耕还林工程、京津风沙源治理工程、野生动植物保护及自然保护区工程、速生丰产用材林工程和防护林工程6个林业重点工程。
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英文: Effects of Shelterbelt on Physiological and Ecological Characteristics and Biomass of Crops. Protective Plantation Technology. Publishing House of Northeast Forestry University.
中文: 防护林网内玉米田生物量和生产力格局研究。植物生态学与地植物学学报,16(2)。
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