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
- Starting off with vortex tube theory, the relationship between the angular rates and the first harmonic inflow is deduced, and then the generalized model of main rotor dynamic inflow is modified.
本文建立了尾迹弯曲的模型，推导出角速率与一次谐波入流分量之间的关系，据此对旋翼的广义动态入流模型进行了增广和修正； - 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。 - In this paper, the curve-fitting method is used for fitting the measuring signal distinguishes and retains the first harmonic component;
本文应用曲线拟合法对测量信号进行拟合，识别并保留了一次误差运动，正确消除了测量球的偏心，从而得到包含一次误差运动在内完整的误差运动。 - 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。 - The first harmonic winding and harmonic winding no-load property curve are gained when field current is change.
通过改变励磁电流的大小，得到了基波绕组和三次谐波绕组的空载特性曲线。 - 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。 - The method uses the DC component and the first harmonic of a curve'S chain code expressed by fourier series to fit the curve, avoiding the inverse calculation of an array used in general methods.
该方法利用闭合曲线的傅立叶级数表示的直流分量和一次分量实现对闭合曲线的椭圆拟合，可以避免通常椭圆拟合方法中的矩阵求逆问题。 - 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。 - After the nonlinear and absorption effect is taken into account in the applications where high power ultrasonic is involved, the first and second harmonic components of the sound field of stepped circular plate is analyzed, based on the KZK equation and quasi-linear condition.
考虑到大功率超声应用中的非线性和吸收作用，本文从KZK方程和准线性条件出发，对于工作在共振频率下的这种阶梯圆盘，推导了它的一阶和二阶谐波声场计算方法。 - 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。