您要查找的是不是：
- 雙Fourier級數double fourier series
- 二重Fourier級數double Fourier series
- Fourier級數表示representation of Fourier series
- 分數階Fourier級數fractional Fourier series
- Fourier級數（FS）Four ier series(FS)
- 成雙atwain
- 雙解bilingual
- 模數modulus
- 半雙工semiduplex
- 大學英語四級College English Band 4
- 頻數frequence
- 船級ship' classification
- 層數number of plies
- 中位數median
- 大學英語六級考試CET-6 [College English Test, Band Six]
- 取數access
- 院級institute-level
- 補數complementary number
- 不可數名詞noun of continuous quantity
- 轉數revolution
