1) frequency loci veering
频率曲线转向
2) frequency curve
频率曲线
1.
Research on optimality technology of frequency curve of step motor in control of PLC;
PLC控制的步进电机频率曲线优化技术研究
2.
Theoretical frequency curves and their application in engineering problems;
理论频率曲线及其在工程问题上的应用
3.
Based on the field data of the Weihe River from 1990 to 2000, the dynamic change of water quality was studied by use of the method of frequency curve.
为了解渭河陕西段主要污染因子的污染历时现状,对渭河陕西段的年径流量与水质污染程度的关系以及在不同水期水环境的质量进行了分析,利用1990~2000年系列水质监测料,采用频率曲线法分析研究了渭河陕西段水质的动态变化规律。
3) frequency veering
频率转向
1.
Characteristic analysis of frequency veering and mode interaction of bladed disks;
叶盘系统频率转向与模态耦合特性分析
2.
To our knowledge,beam function method is different from what are used by the very few papers we have found in the open literature for studying frequency veering.
针对航空发动机叶片的结构和运行特点,基于薄板弯曲理论,采用梁函数组合法推导了在变转速状态下悬臂板频率和振型的解析解一般表达式,研究了叶片在离心力作用下的"频率转向"特性和模态振型的变化规律,分析叶片展弦比对"频率转向"特性和模态振型的影响规律,较为详细地讨论了在"动频交叉点"叶片的模态振型。
4) return curve
转向曲线
1.
From theoretical analysis,the kinematic and dynamic characteristics of the grooved drum of glass roving winders are compared between using arc and parabola as the return curve on the grooved drum,based on which a new equation is deduced from a new kinematic law.
从理论上分析比较了圆弧、抛物线作为玻璃纤维络筒机槽筒沟槽转向曲线时槽筒的运动特性和动力特性,在此基础上提出了新的运动规律,推导了运动方程。
5) frequency graph method
频率曲线法
6) frequency rate curve
调频率曲线
1.
By computing the quadratic phase(QP) function of the signal,it is shown that the QP function is concentrated along the frequency rate curve of the signal,and the peak of the QP function yields the estimates of the Chirplet rate,time center and the amplitude;Then the initial frequency and th.
该算法利用计算信号的二次相位函数,得到其能量分布集中于信号的调频率曲线上的结论,此时通过谱峰检测可同时获得Chirplet调频率、时间中心和幅度的估计;然后通过解线性调频技术获得其初始频率和时间宽度的估计。
补充资料：频率曲线
见水文频率分析。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条