non-radial streak

例句：

1. 1.The non-radial streak in the crystal is due to the presence of impurities.
   晶体中的非径向条纹是由于杂质的存在。
2. 2.The non-radial streak was caused by a small crack in the glass.
   非径向条纹是由玻璃中的一个小裂缝造成的。
3. 3.The non-radial streak is visible when the light passes through the crystal.
   当光线穿过晶体时，可以看到非径向条纹。