accounting sand table的用法和样例：
- A sand table of our Qinshan Nuclear Power Base.
- When the Roman soldiers crash in time, Archimedes was still protecting his sand table, yelled: do not move my circle!
- Regarding Archimedes, he in the sand table the picture circle, is also more important than his life.
- This technology has broad application value in real estate advertising, military sand table, showing tourist attractions, such as the bidding project.