| 1. | Positive frequencies are produced by anticlockwise rotation and negative frequencies by clockwise rotation .
正频率是逆时针旋转产生的，而负频率是顺时针旋转产生的。 |
| 2. | Positive frequencies are produced by anticlockwise rotation and negative frequencies by clockwise rotation .
正频率是用逆时针旋转来产生，而负频率是用顺时针旋转来产生。 |
| 3. | 2 . we studied the relationship between the locking bandwidth and the injected signal light intensity and verified that the locking bandwidth is asymmetric . the negative frequency detuning is larger than positive frequency detuning
实验证实了锁频范围是不对称的，负失谐范围大于正失谐范围，并且注入功率越大，锁定范围越大。 |
| 4. | The positive and negative frequency expressions of quasi - monochromatic optical fields of a pulse in fiber - optic communication and the positive and negative frequency forms of fourier transformations and nonlinear schr ? dinger ( nls ) equations are discussed
摘要讨论光通信中脉冲的准单色光光场的正负频表示，正负频形式的傅里叶变换，正负频形式的非线性薛定谔方程及它们之间的关系。 |
| 5. | Especially , in the solution of pulse spectrum , the negative frequency form of nls equation should be solved by the negative frequency form of fourier transformation , while the positive frequency form of nls equation is solved by the positive frequency form of fourier transformation
尤其在脉冲频谱的求解问题中，如果采用负频形式的非线性薛定谔方程则必须选取负频形式的傅里叶变换；如果采用正频形式的非线性薛定谔方程则必须选取正频形式的傅里叶变换。 |
| 6. | We know that range - velocity coupling could n ' t be eliminated in the lfmcw radars of single frequency modulation slope . based on the characteristic that the range shift is symmetrical between positive and negative frequency sweep in triangular frequency modulation continuous waves , a method of frequency domain pairing is proposed to solve range - velocity coupling problem
分析可知，由距离速度耦合引起的距离偏移在单扫频线性调频连续波雷达中无法消除，但在对称三角形调频连续波中上、下扫频段的距离偏移会出现对称性。 |
