| 1. | Two-dimensional models are designed in different ways .
设计了几种二维模型。 |
| 2. | Graphs give data in a two-dimensional picture .
曲线图可标出二维平面图形上的数据。 |
| 3. | But an extensive water surface is not two-dimensional .
然而地球的辽阔水面都不是平面。 |
| 4. | Since hf forms only a two-dimensional polymer it is less viscous than water .
由于HF只形成二维聚合体，所以它的粘性比水的小。 |
| 5. | It is usual to resort to two-dimensional arrays in areas of severe noise problems .
在噪音干扰问题严重的地区通常求助于二度组合。 |
| 6. | This phenomenon, peculiar to the two-dimensional wave motion, is sometimes called diffusion .
二维波所特有的这种现象，有时叫做弥散现象。 |
| 7. | Two-dimensional collisions, both elastic and inelastic, may be demonstrated on this table .
在这个桌上，可以演示二维的弹性和非弹性碰撞。 |
| 8. | If we hold one of the three variables constant, we can make a two-dimensional plot .
如果我们使三个变量中的一个保持不变，则可作二维曲线。 |
| 9. | By way of analogy, we might think of a two-dimensional bug living out his life in a plane .
打个比方，我们可以想象一个一生都在平面上度过的两维昆虫。 |
| 10. | Our knowledge of the oceans, a hundred years ago, was confined to the two-dimensional shape of the sea-surface .
一百年前，我们只知道海洋是二维平面形的。 |
