small angle grain boundary

例句：

1. 1. The grain boundary playsa crucial role in the mechanical properties ofthe material.
   晶粒边界在材料力学性能中起着关键作用。
2. 2. In theprocess of recrystallization, the small anglegrain boundary is formed due to themovement of dislocations.
   在再结晶过程中，由于位错的运动形成了小角度晶粒边界。
3. 3. The small angle grain boundaryis an important factor affecting the fatigue lifeof the material.
   小角度晶粒边界是影响材料疲劳寿命的一个重要因素。