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）。 - More convenient using of fast Fourier transform to get the first harmonic of the mathematical model, and the error is relatively large.
利用快速傅立叶变换比较方便得到一次谐波的数学模型，而且误差比较大。 - 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。 - 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。 - Thus a smaller membrane gives off a higher first harmonic.
较小的膜发出较高的第一陪音。 - 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。 - The first order non-simple harmonic coefficient enhances modulus.
第一非简谐系数的存在使弹性模量增大。 - 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。 - In this paper, firstly, relations of first two harmonic induced velocities to the lower and same-order harmonic circulations are obtained from the generalized classical vortex theory of the rotor.
本文从旋翼的广义经典涡流理论出发，通过环量对诱导速度的贡献的简化处理，推导出旋翼诱导速度的二阶分布。