变晶

Accordingly, the self-catalysis effect of martensitic transformation is weaked in nanosized crystals.

由此得出：在纳米晶体中马氏体相变的自促发效应比传统粗晶明显地减弱。

It's worth to notice that we can modulate the diameter on micrometer scale by tuning only few nanometers on thickness of GaAs!

由实验和理论预测的结果比较，我们发现使用制程或是磊晶调变厚度的结果都与理论预测相当符合。

10EV and 100eV bombardments have two different influences on the behavior of surface atoms.

10eV、100eV粒子的轰击对表面原子的行为有两方面的影响：一方面，增强了表面原子形成二聚体的能力，使表面二聚体成键数量增加；另一方面，也使表面原子排列无序程度增加，非晶化倾向变得明显。

More recent research work has revealed a number of fascinatingphenomena such as charge-ordering of the 〓 and 〓 ionsobserved in real lattice space, phase segregation occurred in thecritical regimes of structural and magnetic transitions.

并且在近几年里，在这类材料中相继发现了许多新现象，例如：低温下〓和〓离子在晶格空间上的有序排列、在结构和磁相变过程中存在的相分离现象，等等。

The results show that the plasticity zone and dynamically quiescent layer become fine equiaxed recrystallisation under the thermo-mechanical effect, the grains in the heat-affected zone grow up because of the effect of friction heat. When the rotation speed is 2 500 r/min and the welding time is 12 s, good joint is achieved, and the tensile shear strength of the joint reaches 9.24 kN. The tensile shear strength of spot increases with increasing tool rotation speed, with increasing welding time, the strength increases first, while then reduces. The microhardness of plasticity zone is high, but is slightly lower than that of the base metal, the minimum value of microhardness is in the heat affected zone. When the energy input of joint is high, the fracture type of spot is mode Ⅰ, and the tensile shear strength is high; on the contrary, when the energy input of joint is less the fracture type of spot is mode Ⅱ, and the strength is low.

结果表明：塑性区和动态静止层的晶粒在热和力作用下发生动态再结晶形成细小的等轴晶，热影响区的晶粒在摩擦热作用下长大变粗；搅拌头旋转速度为2 500 r/min，焊接时间为12 s时，可以获得力学性能较好的焊点，焊点的剪切强度达到9.24 kN；焊点的剪切强度随搅拌头旋转速度的增大而增大，随焊接时间的延长先增大后减小；塑性区的显微硬度较高，但略小于母材，接头显微硬度的最小值分布在热影响区；焊点热输入量较多时，接头为Ⅰ型断裂，焊点的剪切强度较高；焊点热输入量较少时，接头为Ⅱ型断裂，焊点的强度较低。

The sharp rising process of the reflectivity was explained quantitatively well based on the model of Auger recombination of high density plasma and Auger-recombination-induced heating to lattice, which showed the heating effect induced by Auger recombination in high density plasma should be the main mechanism of ultra-short laser pulse-induced phase change.

利用高密度等离子体的Auger复合及其感应的晶格加热模型较好地定量解释了反射率从最小到最大的快速变化过程，表明高密度等离子体的Auger复合加热导致的热效应可能是超快激光诱导相变发生的主要机制。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。