wave number的用法和樣例：
例句
- There is an indefiniteness in the wave number that is related to the finite length of the train.
由於波到的長度是有限的，因此相應地在波數上存在著不確定性。 - The cutoff wave numbers and distribution of field components of the high-order modes are calculated by those formulas.
根據這些公式可求出各模式的截止波數和相應的場分佈。
