instrument for wax pattern preparation

例句：

1. 1.The scientist uses a microscope to examine the sample.
   科学家使用显微镜来检查样本。
2. 2. The teacher asked the students to demonstrate their understanding of the concept with an experiment.
   老师要求学生们通过实验展示他们对这个概念的理解。
3. 3. The engineer designed a new instrument for the factory's production line.
   工程师为工厂的生产线设计了一种新的仪器。