composite sample

例句：

1. 1. The engineers used the composite sample to study the material's properties.
   工程师们使用复合材料样本来研究材料的性质。
2. 2.The company sent a composite sample for testing before making any final decisions.
   公司在做出任何最终决定之前，发送了一个复合材料样本进行测试。
3. 3. The composite sample was designed to withstand high temperatures and pressure.
   该复合材料样本设计用于承受高温和压力。