1) J-function
J函项
2) calculation of item J
J项计算
3) J function
J函数
1.
(Ripley s) L) function and J function,to analyze the spatial point pattern and marked point pattern of Nitraria tangutorum shrub islands for 3 samples in 3 different towns(Duguitala,Huhemudu and Balagong).
采用Ripley sK函数(L函数)和J函数对研究区内典型样方的白刺灌丛沙包进行点格局和标记点格局分析。
4) J-functional
J-泛函
5) jj coupling spectroscopic terms
j-j耦合谱项
6) J-A_2 three-term solution
J-A_2三项解
1.
Based on the geometry constraint,this paper analyzes the effect of material strength mismatching deeply,and obtains the formula J-A_2-A_(2m) which is based on the J-A_2 three-term solution of homogeneous material to predict crack tip fields of welded joints,and apples it to the modified of J - R resistance curves of welded joints.
本文基于几何约束,对强度失配的影响进行了深入的分析,基于均匀材料中描述几何约束的J-A_2三项解,得到了预测焊接接头裂纹尖端应力场的J-A_2-A_(2m)公式,并通过有限元方法验证J-A_2-A_(2m)公式预测的裂纹尖端应力场,同时将其应用于焊接接头的J-R阻力曲线的修正来对J-A_2-A_(2m)公式进行试验验证。
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