Dislocation cell and sub grain formed in ferrite grain are found at the stage of fatigue crack propagation in the area of crack tip.
疲劳裂纹扩展阶段裂纹尖端附近为形成于铁素体晶粒内的位错胞及亚晶。
In recent months, domestic food prices have risen sharply in South Asia and parts of sub-Saharan Africa, despite a fall in global grain prices over the past year.
最近几个月来，尽管去年全球粮食价格有所下滑，但南亚国家和部分撒哈拉以南非洲国家的国内食品价格出现了大幅上扬。
The strength and toughness of super fine grain steels are greatly increased because of its micrometer or sub micrometer grade grain size.
超细晶粒钢依靠生成微米级或亚微米级的铁素体，使钢的强度和韧性大大提高。
The growth and grain yield of summer maize in three kinds tillage management of no tillage, moldboard plowing and sub-soiling under two conditions of stubble mulch and no mulch have been conducted.
对小麦机械收获后残茬覆盖与不覆盖两种条件下免耕、翻耕和间隔深松三种土壤耕作方式夏玉米的营养生长及籽粒产量进行了研究。
This topic originates from the sub-topic of the national grain bumper science and technology project.
本课题来源于国家粮食丰产科技工程的子课题。
A new dynamic recrystallization model consisting of particle-stimulated nucleation and sub-grain rotated-induced nucleation was proposed.
为此，提出了一种新的粒子激发形核与亚晶倾转形核长大的混合再结晶模式。
The plane defects of metals and alloys include grain boundary, sub-grain boundary, twins grain boundary, phase boundary, stacking fault, outward surface, etc.
金属和合金中的面缺陷包括晶界、亚晶界、孪晶界、相界、堆垛层错、外表面等。
When emulsions were fogged by (1) a small amount of thiourea dioxide and gold salt, fog centers distributed on the grain surface and sub-surface;
当二氧化硫脲量小，加金灰化时，灰化中心分布在颗粒表面和次表面；
When emulsions were fogged by (1) a small amount of thiourea dioxide and gold salt, fog centers distributed on the grain surface and sub-surface;
当二氧化硫脲量小，加金灰化时，灰化中心分布在颗粒表面和次表面；
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