| 单词 | romer |
| 释义 | romer/ˈrəʊmə /noun A small piece of plastic or card bearing perpendicularly aligned scales or (if transparent) a grid, used to determine the precise reference of a point within the grid printed on a map.They can place a car on the surface plate (an accurately measured flat plane) and use what is called a romer arm to calculate the car's dimensions to exact specifications. Origin |
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