一般地，铸造组织为树枝晶组织，组织成分不均匀；
In general, dendrites occur in the microstructure of castings and the distribution of chemical elements is not homogeneous.
模拟结果表明熔体过冷度和树枝晶的计盒维数呈近似抛物线关系。
The results of simulations indicate that the relationship between melt undercooling and box counting dimension of dendrite is close to parabola.
结果表明，梯度过渡层的组织形态为细小的柱状晶-胞状树枝晶-树枝状晶。
The results indicated that the microstructure of the transition layer is a structure of fine columnar crystal-cystiform dentrite-dentrite.
堆焊层中凝固组织形态以及树枝晶生长方向取决于熔池凝固过程中的传热过程。
The morphology of the solidification structure and the growth direction of the dendrite depended on the heat transfer during the solidification process of the molten pool.
未添加re的合金，随浇注温度的下降，其初生相由发达的树枝晶转变成等轴枝晶。
As pouring temperature decreasing, primary phase in the alloy without re addition changes from large dendritic crystal to equiaxed crystal.
结果显示，新型模具ZA合金用TIG方法进行焊接，焊缝组织形态主要是柱状树枝晶和少量的等轴晶；
It was shown that after the ZA alloy was processed by TIG welding, the weld seam consists mainly of columnar dendrites and a small amount of equiaxial crystals;
在相场模拟中，通过捕获液态界面，系统研究了过冷对纯金属熔体凝固过程中树枝晶侧向分枝形貌的影响。
The growth process of side-branching of dendrites during solidification of pure Ni melt was studied by the phase-field simulation.
温度相对均匀使得游离的晶粒得以保存下来，抑制了晶粒在某个方向上的优先生长，从而抑制了树枝晶的形成。
The dissociative grains were saved and the priority growth at one direction was restrained because of the relative uniform temperature field, consequently the nondendritic structure was formed.
采用捕获液态界面改进的相场方法，系统地研究了结构起伏、能量起伏对过冷纯金属熔体中树枝晶生长的影响规律。
The affecting law of structure fluctuation and energy fluctuation on dendrite growth in pure undercooled melt was studied by simulation of a phase-field method.
焊缝区组织主要为等轴晶和树枝柱状晶，熔合区组织主要为柱状晶。
The crystallizing morphology on the weld seam was equiaxed grains and dendrites and that on the fusion area were columnar crystals.
结果表明，所得粉末为泪滴状，其显微组织为树枝状晶和胞状晶。
The results have shown that the powder obtained is of tear-shape and its microstructures are of dendrite and cellular grains.
结果表明，所得粉末为泪滴状，其显微组织为树枝状晶和胞状晶。
The results have shown that the powder obtained is of tear-shape and its microstructures are of dendrite and cellular grains.
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