| 1. | Ab extends by 2mm and bc contracts by 2mm . AB伸长2mm,而BC缩短2mm。 |
| 2. | The line ab intersects the line cd at e . 直线AB与直线CD相交于E点上。 |
| 3. | The angle is contained by the lines ab and ac . 此角由直线AB和AC构成。 |
| 4. | The lines ab and cd intersect at e . 直线AB与直线CD相交于E点上。 |
| 5. | Two ideas a, b are said to be coprime if a+b=(1) . 如果ab(1),理想a和b叫作互素。 |
| 6. | Then we exclude elements a and b then we include again the ab . 然后去掉A和B的元素,再重新包含AB的元素。 |
| 7. | We use juxtaposition to denote conjunction, ab means both a and b . 我们利用并列表示合取,AB意味着A与B两者。 |
| 8. | The tube abc shown is cantilevered with ab and bc in a horizontal plan . 所示的管ABC是由位于同一水平面内的AB和BC组成的悬臂。 |
| 9. | This recording was taken on weathered outcropping limestone with a relatively short ab (40m) . 这是在风化的灰岩露头上用较小的AB距(40m)记录的。 |
| 10. | This recording was taken on weathered outcropping limestone with a relatively short ab (40m) . 这是在风化突出的石灰石上用较小的AB踞(40m)记录的。 |