defect lattice

例句：

1. 1. The crystal structure of thematerial is highly defective.
   这种材料的晶体结构非常不完整。
2. 2. The defective lattice causesthe material to be weak and brittle.
   这种缺陷晶格导致材料变得脆弱和易碎。
3. 3. In order to improve the strengthof the material, engineers are workingon developing a defect-free lattice.
   为了提高材料强度，工程师们正在努力开发无缺陷晶格。