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
- 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 - First Harmonic Saturated Absorption Frequency Stabilization of Lasers Using Sampling Integration Technique
利用取样积分实现激光饱和吸收一次谐波稳频 - And gives the safety evaluation indexes of nodal diameter static frequency of first harmonic system vibration band of blades with round linking. All these have reference value for judging the high frequency vibration of blade system.
给出了整圈连接叶片一阶系统带节径静频率的安全性评价指标，时判断叶片系统的高频振动具有参考价值。 - The first harmonic measurement is achieved using analog filters, because the error is too large, real bad, harmonic measurement process is no longer the preferred method.
最早的谐波测量是采用模拟滤波器实现的，由于误差太大，实时性太差，谐波测量过程中该方法已不再优先选用。 - 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。 - This article first harmonic harm, the causes, such as management standard simply introduces several different, and separately calculated method of harmonic described and compared.
文章首先对谐波的产生原因、危害、管理标准等进行了简单的介绍，并分别对几种不同的谐波计算方法进行了阐述和比较。 - 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。 - 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。 - 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。 - 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）。