| 1. | The ground was low and covered with a second growth of grey-green willows .
地势很低洼，长满了人工种下的灰绿色的柳树。
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| 2. | It ' s the most well preserved river valley second growth forest in asia
它是亚洲保存最完整的河谷次生林。
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| 3. | Probe into the effective paths and methods for transforming the low - efficiency second growth
低效次生林改造的有效途径和方法探讨
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| 4. | Physiognomy classifies forests based on their overall physical structure or developmental stage ( e . g . old growth vs . second growth )
地貌样式林根据它们整体物质结构或发展阶段（例如原生和次生） 。
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| 5. | The abundant degree of plants , seed seedling amount , and the diversified index in the seed bank of the urban green land are lower than the natural second growth forest in outer suburbs
城市绿地土壤种子库中种的丰富度、种子苗量、多样性指数均不如远郊区山地天然次生林。
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| 6. | The bell - shaped time course of the information entropy indicates that a forward mutation of " - resistant " hosts takes place , since no loss of cellular viability occurs for the second growth phase of reinduced ( i . e . recovered ) cells
从诱导过程之钟形讯息乱度之时间趋势表示正向反应变异为-阻抗能力之宿主菌确实已发生，因为再诱导菌相细胞之第二生长期并未发生因感染而失去细胞存活之现象。
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| 7. | For the ceramic materials , the effects of additives such as pbo , b2o3 , co2o3 , mno2 , cr2o3 , sb2o3 on the electrical properties of bismuth - free zno - glass varistor were studied . the glass phase formed mainly by pbo and b2o3 during sintering process could decrease the sintering temperature , improve grain uniform growth and inhibit grain second growth . nonlinear property could be improved by properly adding co2o3 , mno2 , and cr2o3
对瓷料而言，系统研究了非bi系zno -玻璃料配方体系中pbo 、 b2o3 、 co2o3 、 mno2 、 cr2o3 、 sb2o3等添加剂对压敏电阻电性能的影响规律，其中， pbo 、 b2o3在烧结过程中形成的玻璃相，可降低烧结温度，促进晶粒均匀生长，抑制晶粒二次长大， co2o3 、 mno2 、 cr2o3做为非线性添加剂，适量添加可提高样品的非线性， sb2o3做为改性添加剂，在烧结过程形成的尖晶石相可细化晶粒，抑制晶粒二次生长，改善样品的综合电性能。
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| 8. | The study was primarily conducted to investigate the effects of various irrigation managements on the yield , quality and wue of alfalfa and the sustainable utilization of soil - water in north china plain . five treatments were applied : 0mm , 30mm , 50mm , 75mm and 100mm irrigating at the beginning of the second growth cycle in 2001
本研究通过两年的灌溉实验，根据对降水情况、土壤水分的蒸发量、蒸散量与苜蓿各生物学指标的分析，初步探讨了在华北平原地区不同灌溉处理对于苜蓿产量、品质、水分利用率以及苜蓿地土壤水资源利用可持续性的关系。
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