查询词典 dendritic

Onedimensional platelike dendritic model was built to describe the microsegregation during binary alloy solidification with finite solid backdiffusion and complete diffusion in the liquid.

建立了描述二元合金凝固的平面枝晶一维微观偏析数学模型，考虑溶质在固相中有限扩散，在液相中完全扩散。

And includes the following aspect: 1 The synthesis of dendritic polyvalent glycol-conjugates ligand were concluded which can provide a new method to find new medicine.

本文包括以下几个部分： 1 合成树枝状多效价糖苷配体是找到新的抗感染、抗病毒、抗HIV药物以及人体疫苗等的重要途径。

Globular, non-dendritic microstructure is quickly and efficiently formed and enables the partially solidified slurry to fill the die quiescently with minimal porosity.

球状、非树状的显微结构快速有效地形成并使部分凝固的、有最少气孔的铝浆平稳地压射到模具中。

The extent of the dendrite remelting can be described by the dimensionless superheating of the dendritic skeleton during recalescence.

重熔破坏趋势的大小可以用再辉时枝晶骨架的无量纲过热度来衡量。

According to the theory of recrystallization, the reasons of dendritic formation are analyzed, and measures to improve are proposed.

依据材料的再结晶理论，分析了热轧带肋钢筋中树枝状组织产生的原因，给出了定性的改进措施。

The results show that the microstructures of these three kinds of coating are different from those of the matrix (20 steel). The wear resistance of the flame spray coating is 4. 9 times that of the matrix. This is caused by the existance of hard noncrystal microparticals. The wear resistance of the coating by flame spray welding is 6. 3 times that of the matrix. The reason is that the fine crystal grains can be formed and the solution strengthening, dispersion hardening can be induced by these alloy elements. The resistance of the laser remelt coating is 8. 8 times that of the matrix. This is due to the solution strengthening, dispersion hardening and the existence of very hard dendritic crystal, eutectic and martensite in the microstructure.

作者指出，喷涂层由于层内有一定数量高硬度的合金非晶质点存在，其耐磨性是钢基体的4.9倍；喷熔层内合金晶化产生的晶粒细小，合金元素能起固溶强化作用，也能生成化合物产生弥散硬化作用，故此耐磨性是钢基体的6.3倍；激光涂敷层除所含合金元素产生的固溶强化和弥散硬化作用外，表层组织为高硬度的枝晶+共晶和马氏体，故其耐磨性是钢基体的8.8倍。

With the electrolyte concentration increasing, the polymer molecular configuration of multi-layer stereoscopic random reticulation transformed into a dendritic one.

随着溶剂水电解质浓度的增加，聚合物分子结构形态逐渐由多层次立体无规网状向树枝状和支状转化。

It is analysed in detail that RMF is the main cause of fragmentation and refining dendritic from magnetic hydrodynamics and solid/liquid interface free energy two aspects.

分析认为枝晶的碎断和细化主要是旋转磁场所致，并从磁流体力学和固/液自由能两个方面进行了详细的阐述。

The results show that the influence of electromagnetic stirring on the following solidification behavior is more outstanding when the stirring temperature is near the liquidus; the number of α dendrites is declined and the morphology is transformed into rosiness and non-dendritic grains; the Al-Si eutectic's transition from lamellar structure to fibrous structure occurs in the eutectic reaction too.

结果表明：随着搅拌温度的降低至液相线附近时，电磁场对熔体凝固行为的影响逐渐显著；α初晶中树枝晶不断减少并逐渐转变蔷薇状晶和非枝晶；水淬后Al-Si共晶组织也由粗大的片层状转变为细小的纤维状和鳞片状结构。

This article discusses the central role of dendritic cells in the mechanism of Th2 response induced by schistosome.

本文以树突状细胞为中心，对血吸虫诱导Th2应答的机制作一阐述。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。