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Keywords nano-crystalline materials;face-centered-cubic metals;twin;grain boundary sliding;grain rotation;ductile-to-brittle transition;bimodal grain size materials;ductility; 关键词纳米材料;面心立方金属;孪晶;晶界滑移;晶粒转动;韧-脆转变;双峰晶粒材料;塑性;
bimodal grain size materials 双峰晶粒材料
The grain size distribution was bimodal as a whole. 尘暴降尘的粒度基本呈双峰态分布。
There is a general decrease in grain size upward. 粒度一般是向上递减的。
Rough and loose structure for rough grain size. 接触面积大时用粗松的组织。
Fine grain size for the smaller contact area. 接触面积小时用细的粒度。
Coarse grain size for the larger contact area. 接触面积大时用粗的粒度。
Grain size of the sample had been measured. 降尘量和粒度参数值在尘暴前期和后期都呈现不同特征。
Its equidimensional grain size tends to mask the laminae. 它的粒度的均一往往会掩盖了纹层层理。
The Cu-Ni-Pt(group) ore reference materials with grain size of less than 0.074 mm were prepared by Raymond mill. 采用雷蒙磨粉机;对不同含量铜镍铂(族)矿石标准样品加工至粒度小于0.;074 mm。
Grain size had some effect on the rate of crack propagation. 晶粒尺寸大小对裂纹扩展速率也有影响。
The mechanical properties of materials are dependant on microstructure,including grain size, porosity, networks and so forth. 材料宏观力学性能由材料微观组织决定。
Type O steel shall be supplied without specific grain size control. 0类型的钢没有特殊的颗粒尺寸控制。
Fine-grain (grain size <0.5 mm) aluminosilicate concrete. 细颗粒（粒度小于0.;5毫米）的硅铝酸盐混凝土。
The best rubbing time and grain size are given in the paper. 文中给出了最佳的样品研磨时间及粒度。
Some new materials was summarized and diffusion performance of the lithium ion, particle distribution, grain size, and specific surface area, etc, were analyzed. 讨论了最新的材料研究进展，分析了锂离子在活性材料中的扩散性能、电极材料粒度分布及粒径大小、比表面积等因素对锂离子电池大电流放电性能的影响。
Effects of grain size and content of AgBr on sensitivity of PTG materials using PVA as a hydrophilic binder[J].Photographic Science and Photochemistry,2005,23 (1):6-13. AgBr的尺寸及含量对PVA为粘合剂的光敏热成像材料的光敏性的影响[J].;感光科学与光化学;2005;23(1):6-13
The relationship be-tween grain size and fractal dimension is investigated. 考察了晶粒度与分维之间的关系。
The results show that the different motion tracks of different size particles of broad size materials lead to the different average circulation-time. 大粒径粒子较小粒径粒子的平均循环时间短,大颗粒通过喷动区的次数大于小粒子,生长较快。
They impinge on the final structure, grain size and properties of this alloy. 他们对最终组织、晶粒尺寸和合金性能都有较大的影响。