invest shell thermal dilatometer

例句：

1. 1.The company is investing in a new shell thermal dilatometer to improve its efficiency.
   该公司正在投资购买一台新的壳式热膨胀计，以提高其效率。
2. 2. The research team used the investment shell thermal dilatometer to study the material properties of the new alloy.
   研究团队使用这台投资的壳式热膨胀计来研究新合金的材料属性。
3. 3. The investment shell thermal dilatometer was a crucial tool for the engineers in their analysis of the new machine's performance.
   这台投资的壳式热膨胀计是工程师们在分析新机器性能时的关键工具。