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system and layer
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  “system and layer”译为未确定词的双语例句
     Using gird system and layer methods, the characteristics of canopy structure and the patterns of light distribution in the 8 year old trees in four different high densities(4 m×3 m,3 m×2 5 m,3 m×2 m,3 m×1 5 m) orchards of chestnut( Castanea mollissima ) were studied in Xin Yi county, Jiangsu province.
     采用方格法和分层法对江苏省新沂市沐河果园4种不同密度(4m×3m、3m×2.5m、3m×2m、2m×1.5m)8年生板栗密植园的树冠结构特征和光能分布规律进行了研究。
短句来源
     Using grid system and layer methods, factors influencing the light distribution in the canopy of 18-year-old trees of Prunus mume Sieb. et Zucc were studied from 1983 to 1984,in wuxian County, Jiangsu Province.
     1983~1984年,在江苏省吴县用方格法和分层法调查了18年生梅树的叶幕光能分布规律及其影响因素。
短句来源
     Using gird system and layer methods, the characteristics of canopy structure and the patterns of light distribution and utilization in the 13\|year\|old pear orchard conserved by forest network were studied in Ru Dong county, Jiangsu Province.
     采用方格法和分层法相结合的技术对江苏省如东县棉花原种场林网保护区内13年生梨园的树冠结构特征和光能分布与利用规律进行了系统研究。
短句来源
     Last, it is quantitatively analyzed that the random errors of FWD system and layer thickness arrors affect the back-calculated results of muduli of layers and road bed.
     最后,定量分析了FWD系统的随机误差和面层厚度误差对面层和地基模量反算结果的影响。
短句来源
     The paper analyzes the synthesis, structure, system, and layer of tourism attraction, and it is believed that city managers should strengthen the structure amelioration of attraction elements, strengthen the extended development of related elements and erect the spatial image of cities.
     本文通过影响城市旅游吸引力因素的分析,强调认为必须加强吸引力要素结构优化、加强关联性附加值高的要素延伸开发,并强化树立品牌竞争优势来提升城市旅游竞争力。
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  相似匹配句对
     system;
     油气系统是最有利的系统 ;
短句来源
     SYSTEM
     系统
短句来源
     CONDUCTIVITY IN THE DISORDERED LAYER SYSTEM
     无序层状系统的电导率
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     Design and implementation of multi-layer system
     多层模型设计与系统实现
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     On the Attributes of the Earth Surface Layer System
     地球表层体系的属性考察——可持续发展的认识论基础
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Using grid system and layer methods, factors influencing the light distribution in the canopy of 18-year-old trees of Prunus mume Sieb. et Zucc were studied from 1983 to 1984,in wuxian County, Jiangsu Province. The results showed that the light distribution in the canopy of the trees was directly affected by the intensity and direction of the sunlight as well as the leaf area index ( LAI ) . The light distribution in the different layers of the canopy varied with the changes of the natural sunlight....

Using grid system and layer methods, factors influencing the light distribution in the canopy of 18-year-old trees of Prunus mume Sieb. et Zucc were studied from 1983 to 1984,in wuxian County, Jiangsu Province. The results showed that the light distribution in the canopy of the trees was directly affected by the intensity and direction of the sunlight as well as the leaf area index ( LAI ) . The light distribution in the different layers of the canopy varied with the changes of the natural sunlight. The mean daily light transmissivity,and the daily changes of the light intensity were reduced as the accumulative total LAI increased from the external to the internal part of the canopy. The light distribution and the efficiency of its utilization were directly determined by the structure of the canopy.

1983~1984年,在江苏省吴县用方格法和分层法调查了18年生梅树的叶幕光能分布规律及其影响因素。结果表明,叶幕光能分布直接受叶面积系数、太阳位置和光强的影响。各层叶幕中的光能分布随自然光照的变化而改变,其日平均透光率大小和光照强度日变化范围均从叶幕外围向内膛随累计叶面积系数的增加而递减。叶幕结构直接决定其中的光能分布及其利用效率。生产中,宜通过整形修剪等农业技术措施,维持盛果期梅树高效光合生产的叶幕层厚度1.5m以上、有效叶面积系数5左右。充分提高梅树整个叶幕内光能分布的有效性,对增强树体的光合生产能力有重要的意义。

Using gird system and layer methods, the characteristics of canopy structure and the patterns of light distribution in the 8 year old trees in four different high densities(4 m×3 m,3 m×2 5 m,3 m×2 m,3 m×1 5 m) orchards of chestnut( Castanea mollissima ) were studied in Xin Yi county, Jiangsu province. The results showed that the diameter of canopy reduced, the layer of green leave raised,the thickness of canopy decreased and the volume of canopy reduced with the density increased; The light...

Using gird system and layer methods, the characteristics of canopy structure and the patterns of light distribution in the 8 year old trees in four different high densities(4 m×3 m,3 m×2 5 m,3 m×2 m,3 m×1 5 m) orchards of chestnut( Castanea mollissima ) were studied in Xin Yi county, Jiangsu province. The results showed that the diameter of canopy reduced, the layer of green leave raised,the thickness of canopy decreased and the volume of canopy reduced with the density increased; The light distribution in the different layers of the canopy varied with the changes of the natural sunlight. The mean daily light transmissivity and the daily changes of the light intensity were reduced from the external to the internal part of the canopy. The light distribution in the canopy and the efficience of its utilization were obviously affected by the structure of canopy and the leaf area index(LAI). The best density that has high efficience light usage should be maintained with 834~1334 trees.gha -1 , with the thickness of canopy more than 2.0 m and an effective leaf area index of appoximately 5~6.

采用方格法和分层法对江苏省新沂市沐河果园4种不同密度(4m×3m、3m×2.5m、3m×2m、2m×1.5m)8年生板栗密植园的树冠结构特征和光能分布规律进行了研究。结果表明:随着密度的增大,树冠直径减小,绿叶层上移,叶幕厚度变薄,树冠体积减少;各层叶幕中的光能分布随着自然光照的变化而改变,其日平均透光率大小和光合有效辐射(PAR)日变化范围均从叶幕外围向内膛而递减,树冠结构和叶面积指数(LAI)对PAR分布及利用效率具有决定性的影响。成龄板栗密植园高效光合生产的叶幕厚度宜在2.0m以上,有效叶面积指数5~6,适宜密度为834~1334株/hm2。

Using gird system and layer methods, the characteristics of canopy structure and the patterns of light distribution and utilization in the 13\|year\|old pear orchard conserved by forest network were studied in Ru Dong county, Jiangsu Province. The result showed that the light distribution in the canopy were obviously affected by the leaf area index (LAI), the structure of canopy, solar radiation and its apparent movement, etc. The light distribution in the different layers of the canopy varied with...

Using gird system and layer methods, the characteristics of canopy structure and the patterns of light distribution and utilization in the 13\|year\|old pear orchard conserved by forest network were studied in Ru Dong county, Jiangsu Province. The result showed that the light distribution in the canopy were obviously affected by the leaf area index (LAI), the structure of canopy, solar radiation and its apparent movement, etc. The light distribution in the different layers of the canopy varied with the changes of the natural sunlight, the mean daily light transmissivity and the daily changes of PAR were reduced as the accumulative total LAI increased from the external to the internal part of the canopy; There were great different in the light distribution between different development stages and different weather condition. The light distribution and the efficiency of its utilization were directly determined by the structure of the canopy and the accumulative LAI. In order to enhance the light penetration and its efficiency in the photosynthesis, it was suggested that by controlling density, training and pruning and other agricultural techniques, the thickness of the canopy of a mature, bearing tree be maintained at more than 2.5 m, with an effective LAI of approximately 4.

采用方格法和分层法相结合的技术对江苏省如东县棉花原种场林网保护区内13年生梨园的树冠结构特征和光能分布与利用规律进行了系统研究。结果表明:梨树叶幕光能分布状况直接受叶面积系数、树冠结构、太阳位置及光强的影响。各层叶幕中的光合有效辐射(PAR)分布随自然光照条件的变化而改变,其日平均透光率大小和PAR日变化范围均从叶幕外围向内膛随累积叶面积系数(LAI)的增加而减弱;不同生长时期及不同天气变化下树冠光能分布存在明显的差异性;树冠结构与累积LAI对PAR的分布及利用率具有决定性的影响。在生产实践中,通过密度调控、整形修剪等农业技术措施,维持成年梨园盛果期高效光合生产的叶幕厚度在2.5m以上,有效LAI为4左右,是增强梨树光合生产能力、提高产量和品质的有效措施。

 
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