| 1. | Informally , it is possible to use a plural noun .
口语中可以用复数名词。 |
| 2. | ρa=kv/i is a complex physical quantity.
aKVI是一个复数物理量。 |
| 3. | If we allow this, then the wavefunction x will also be complex .
如果允许这种情况出现，则波函数X也都是复数。 |
| 4. | Fish as a countable noun has two plural forms : fish and fishes .
Fish作可数名词时有两个复数形式fish和fishes。 |
| 5. | Alternatively , the sentence can be rephrased , using a plural noun .
变通一下说法，可以改变句子的措辞，使用复数名词。 |
| 6. | There is a brief discussion of two dimensional mechanics in terms of complex numbers .
这里有关于用复数来讲二维力学的简短讨论。 |
| 7. | We derive the addition formulas for sine and cosine from the arithmetic of complex numbers .
用复数算术推导了正弦，余弦的加法公式。 |
| 8. | This diagram immediately suggests defining two quantities which characterize the complex number z .
这个图立即指出定义两个表征复数Z的量。 |
| 9. | The euclidean norm of an n-vector x with real or complex components is defined as following .
凡具实数分量或复数分量的n-维向量x的欧氏范数被定义如下。 |
| 10. | A third possibility is to rephrase the sentence to make the subject plural , thus avoiding the problem .
第三种可能是修改句子以使主语变为复数，这样避开这个问题。 |
