1.
IMPROVED STRUCTURAL DAMAGE DETECTION METHOD BASED ON THE NATURAL FREQUENCY VECTORS
改进的基于固有频率向量的损伤检测方法
2.
Research on the Precise Calculation of Power Frequency and Vector;
电力系统频率及向量的精确算法研究
3.
Calculating natural frequency and vector of an oscillation system;
一类振动系统固有频率与固有向量的计算
4.
underwater emission-and direction frequencies
水下发射和定向频率
5.
directional frequency characteristic of microphone
传声器指向性频率特
6.
directional frequency response of microphone
传声器指向性频率响应
7.
preferred frequencies for acoustical measurement
声学测量的最佳频率
8.
input quantity to frequency conversion type
输入量-频率转换型
9.
wide-range vibration frequency analyzer
宽量程振动频率分析仪
10.
commutator frequency changer
换向器变频机整流子频率变换器
11.
Measurement of the Fequency Response of a Loudspeaker Using Butterworth Impulse
用Butterworth脉冲测量扬声器的频率频响特性
12.
The number of measurements in an interval of a frequency distribution.
频率分布一次频率分布的区间内计算的数量
13.
Instantaneous frequency rate estimation of multicomponent two-dimensional chirp signals
多分量二维线性调频信号瞬时频率变化率估计
14.
Frequency Control System of Slip-frequency phasor for AC Motor Speed control
交流变频调速的滑差频率矢量变频控制系统
15.
Difference between Doppler Frequency and Azimuth Frequency and Its Influence on the Azimuth Resolution of Spaceborne SAR
星载SAR方位向频率与多普勒频率的差异及其对成像分辨率的影响
16.
The control mode has developed from early Uf control mode to vector control technology and pulse width modulation.
控制方式也从早期的电压／频率控制方式发展到向量控制技术和冲宽度调制技术。
17.
The deformations and the internal forces at a cross section of a beam are taken as state variables to formulate a general equation for computing the natural frequencies of non-uniform beams.
导出了用变形、力作为混合状态变量表示的求解等截面梁的横向振动固有频率的普遍方程。
18.
The first natural frequency map in working space was drawn, which can be useful for selecting proper working position to avoid resonance or low-order harmonic oscillation.
讨论了频率求解精度、收敛性与单元横向弹性位移型函数以及单元数量之间的关系。