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1)  the diameter of a tree-trunk
树干的直径
2)  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。
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3)  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。
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4)  stem diameter changes
树干直径变化
5)  the prostrate trunk of a coconut tree
椰子树的直树干
6)  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。
补充资料：树干
1.亦作"树干"。 2.树的主体部分;树身。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
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