first harmonic
英 [fɜːst hɑːˈmɒnɪk]
美 [fɜːrst hɑːrˈmɑːnɪk]
一次谐波；基（谐）波
英英释义
noun
- the lowest tone of a harmonic series
双语例句
- Coefficient of determination of average CR and the first harmonic CR in baseline and hyperemia conditions were greater than 0.97 ( P< 0.001).
基础状态和充血状态的平均冠脉阻抗和一次谐波冠脉阻抗的决定系数（r2）均大于0.97（P<0.001）。 - If the frequency of a laser is modulated sinusoidally, the first harmonic component of saturated absorption signal can be used as error signal to stabilize the frequency of the laser.
对激光器进行频率调制，检测原子分子饱和吸收信号中的一次谐波成分得到频率误差信号，反馈控制可以实现激光频率的稳定。 - Fast Measuring First Harmonic Reactive Power in Power System Based on 8098 Single Chip Processor
基于8098单片机的电网基波无功功率快速测量 - Through the method of curve fitting, the eccentric motion which is of the same frequency as the rotary speed is separated ( effectively) from the signals in the first harmonic component. Thus the rotational error of the spindle is determined correctly.
应用数学方法曲线拟合法对测量信号中与转速同频的偏心运动和主轴误差运动中的一次误差运动进行了有效的识别分离，正确消除了偏心运动，实现了主轴误差的准确评定。 - Even if inspiring frequency is far from frequency of the derived system, first harmonic, super harmonic and combined harmonic resonance may take place respectively in the normal speed range of an actual gear system, because of time-varying mesh stiffness.
即使激励频率远大于派生系统的固有频率，在实际的物理系统中，由于时变啮合刚度的影响，也可能出现主共振、谐共振和组合共振。 - Thus a smaller membrane gives off a higher first harmonic.
较小的膜发出较高的第一陪音。 - In fact, the radial composite deviations of master gears do exist and affect the accuracy of measurement results by the first harmonic.
但实际上，标准齿轮的径向综合偏差是存在的，而且以一次谐波的形式传递给被测齿轮，影响其检测结果的准确性。 - The utility of the ratio of second and first harmonic to eliminate the influent of light source fluctuation was analyzed.
并对利用二次谐波与一次谐波的比值来消除由光源波动引起的影响等做了分析。 - With the first harmonic and its second harmonic the even order harmonics can be obtained.
并定性解释了其产生机制和谐波效率提高的原因。 - Harmonic analysis of angle measuring error has been done through Fourier analysis theory. First harmonic, second harmonic and third harmonic have been compensated with the method of software. Finally, measuring results have satisfied the specific requirements.
利用傅立叶分析理论对测角系统的误差进行谐波分析，补偿一、二、三次谐波误差，得到补偿公式，通过软件方式实现误差补偿，最后使得测量结果满足技术指标要求。