| 1. | With straightedge and compasses, divide a segment of a into 2 parts .
用直尺和圆规把线段a分成两部分。 |
| 2. | Each step of the construction of a circle with straightedge and compass calls for finding a point of intersection .
用圆规、直尺作圆的每一步都需要找一个交点。 |
| 3. | A compass is used to draw circles of a specific diameter
圆规用来画有一定直径的圆。 |
| 4. | Now we begin to draw a circle with compasses
现在我们开始用圆规画一个圆。 |
| 5. | Nearby calendar , there is a compass and a stack of pads
日历的旁边有一个圆规和一迭笔记本。 |
| 6. | Compass with interchangeable points for precision drawing instruments
精密绘图仪用插脚式圆规 |
| 7. | Compass with interchangeable points for standard drawing instruments
带可互换头的标准绘图圆规 |
| 8. | Drop bow for standard drawing instruments
标准绘图仪定心弹簧圆规 |
| 9. | Pivot needles for fixed center spring bow
固定中心弹簧圆规的枢针 |
| 10. | The teacher asked his students to use their compasses to draw circles
老师要求学生们用圆规画圆。 |
