exactness

例句：

1. 1.The scientist used a microscope to measure the exactness of his measurements.
   科学家使用显微镜来测量他测量的精确性。
2. 2. The engineer insisted on using only the most exactness tools for the project.
   工程师坚持只使用最精确的工具来完成这个项目。
3. 3. The mathematician was able to solve the problem with an exactness that surprised everyone.
   数学家能够以极高的精确度解决这个问题，这让所有人都感到惊讶。