1) vortex spring frequency
涡跳动频率
1.
They contain measurements of vortex spring frequency and model vibration frequency, phase-averaged flow image and re-constructed 3-D flow visualization from 6 parallel laser sheet image.
给出 8 0°三角翼和Λ机翼模型低速三维非定常流场显示和测量结果 ,包括大迎角和大滚转角时前缘涡跳动频率及相应模型的抖动频率测量 ,模型作大幅度振动时流动图象的相位平均测量 ,以及由平行 6片光经三维重建得到空间流动图象。
2) swirl frequency
涡动频率
1.
In the basic of oil film pressure analysis and the swirl frequency equation of oil film force and the bearing coupling motion, we give the journal swirl principal in different swirl velocity, the load attenuating region of bearing oil film pressure distribution, unstability transition region and load unstability history area.
结合对油膜压力分布、油膜力和轴承流固耦合运动的涡动频率方程的分析,给出了轴颈在不同涡动速度时,轴承油膜的压力分布的承载衰减区、失稳过渡区(或半速失稳区)和承载失稳变化区域,并且在这三个区域里完成了收敛油楔的正压与发散油楔的负压之间压力波形的转换性质。
3) frequency hopping
跳频，频率跳动
4) frequency hopping
频率跳变
1.
This paper brings forward arithmetic which locate stationary emitter with frequency hopping and frequency drift using angle and frequency measurements.
本文利用方位角和频率观测信息,提出了一种对存在频率跳变和频率漂移固定辐射源的单站无源定位方法,给出了定位原理、定位误差的CRLB界以及基于最大似然估计的定位算法,并进行了计算机仿真,仿真结果证明了该定位方法的有效性。
2.
Frequency hopping phenomenon of a self-excited pulse combustor was experimentally studied and the regular of the frequency hopping with the power and equivalence ratio of this kind of combustor was measured.
对自激脉动燃烧器脉动频率的跳变现象进行实验研究,测得了此类燃烧器频率随功率、当量比跳变的规律:当燃烧器功率降低到某一临界值时,其工作频率将从基波型的频率值上跳到高一次的谐波型的频率值;进一步降低燃烧器的功率,其工作频率将在这一谐波振型上按声学规律继续下降,反之亦然;当量比较高时,燃烧器在功率较高的情况下就会出现频率跳变;当量比过低时,会导致燃烧器在频率跳变阶段运行不稳定。
5) startup frequency
突跳频率
1.
An accelerating process is required because corresponding pulse frequency of regulated rotating speed is much greater than startup frequency of stepping motor.
由于规定的步进电机转动速度所对应的脉冲频率远大于步进电机的突跳频率,因此达到最终转动速度需要一个加速过程,加速程序采用汇编语言进行编制,可以使过渡时间精确到μs级,保证了加速过程的平稳性。
6) hopping-rate
跳频速率
补充资料：频率计量(见时间频率计量)
频率计量(见时间频率计量)
frequency metrology: see time and frequency metrology
口n IQ liliang顷率频率计皿(f比quency metrolo盯) 计t。见时闰
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