chemical-milled structure

例句：

1. 1. The chemical-milled structure of the material is very important for its performance.
   这种材料的化学加工结构对其性能至关重要。
2. 2. The chemical-milled structure of the material has a significant impact on its durability.
   这种材料的化学加工结构对其耐用性有显著影响。
3. 3. The chemical-milled structure of the material can be optimized to improve its performance.
   这种材料的化学加工结构可以优化以提高其性能。