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1)  trees with diameter 4
直径为4的树
1.
In this paper,some conditions for which trees are equitably k-colorable are determined;a sufficient and necessary condition and an explicit formula for the equitable chromatic number of trees with diameter 4 are given.
本文得到树可均匀k-着色的一些条件;直径为4的树可均匀k-着色的一个充分必要条件和均匀色数表达式。
2)  Integral trees of diameter 4
直径为4的整树
3)  the diameter of a tree-trunk
树干的直径
4)  graph with diameter 2
直径为2的图
5)  stem diameter
树干直径
1.
The growth pattern in stem diameter of nine sample trees of Larix principis-rupprechtii was measured by dendrometer and the response of which to the meteorological factors was researched from May to November in 2005 in the north of Liupan Mountain, Ningxia.
结果表明:树干直径的日最大值出现在6:00—9:00,最小值则在16:00—20:00;直径生长的季节变化表现为前期快后期慢,8月下旬以后基本停止生长;林分内优势度大的林木生长较快;树干直径生长过程随时间的变化符合幂函数曲线,方程的确定系数为0。
6)  trunk diameter
树干直径
1.
Based on the newly constructed genetic linkage map,the QTLs for trunk diameter in jujube was also analyzed in this study,and a total of 6 QTLs were identified,and they could explain 38.
0软件,首次对控制枣树干直径性状的QTL进行分析。
2.
Activities of SOD,CAT and POD in leaf and changes of ground diameter and trunk diameter of Eucommia ulmoides Oliv.
)叶片的超氧化物歧化酶(SOD)、过氧化氢酶(CAT)和过氧化物酶(POD)活性及树干地径和树干直径的变化进行了分析比较。
补充资料:当量比表面直径、表面积体积平均直径
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性质:又称当量比表面直径、表面积体积平均直径。是颗粒群表面积分布的平均直径。其意义为与颗粒群的粒形相同,总体积相同、总表面积相同,且粒度均匀的一个假想颗粒群的粒度。亦即指与该颗粒群的粒形相同,比表面积相同的一个颗粒的粒度。 

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