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- frequency changing repeater 变频中继器
- We also supply series YVF2 frequency changing motor and series YD changing motor. YVF2系列的变频调速电机和YD变极变速电机，上述各系列电机本厂均可提供。
- Because of its digital structure, it has many advantages, such as high frepuency and phase resolution , high speed of frequency changing, low phase noise and easy for integration. 由于采用了全数字结构，它具有频率和相位分辨率高、频率转换速度快、相位噪声小以及易于集成等诸多优点。
- A concentration of receptor cells in their inner ear makes bats extremely sensitive to frequency changes. 一些蝙蝠内耳里的受体细胞的集中使它们对频率的变化极其敏感。
- The author sums up the operation practice of several types of auto-levellers amounted onscutching lapper of the mill, of which frequency changing auto-leveller is mainly dealt with. 本文总结了本厂几年来在清棉成卷机上几种自调匀整装置的使用实践，着重分析探讨了变频自调匀整装置的使用性能，可供使用选型参考。
- The results show that the Heihe region Cercospora Race greater the number and frequency changes. 结果表明黑河地区灰斑病生理小种数目和频率有较大变化。
- The efficiency of electrostatic precipitator is extremely unstable as a result of frequency change of boiler coal quality in china. 我国燃煤锅炉的煤质多变,从而导致电除尘器的效率极不稳定。
- principle of frequency changing speed control 变频调速原理
- frequency changing and speed regulating 变频调速
- The methed is based on the redox reaction of sulfion with iodine,and the frequency change of the pieoelectric crystal caused by unreacted iodine is measured. 硫与人体健康的关系十分密切,硫的医疗价值越来越引起人们的重视,因此硫的测定具有重要意义。
- The results showed that the effect of sound waves was very sensitive to the frequency change，which meant that orthokinetic interaction governed the process. 实验证明了声波团聚中存在最佳频率，在此频率下团聚效果最好，偏离该值团聚效果急剧降低。
- The sampling frequency of PMU is constant because of the synchronization of its phasor measuring.As system frequency changes, the error of measuring phasor is avoidless. 由于相量测量装置(PMU)对相量测量同步性的要求，其采样频率应保持为常数，当系统频率变化时，相量的计算会出现误差。
- Meanwhile,the "frequency change ratio" is applied to the PVB damage detection of laminated glass plate and the analysis process is established by using the finite element equations gained. 同时本文将“频率变化比”方法应用到夹层玻璃板PVB损伤检测中,用推导出的有限元公式建立了频率变化比法的分析过程。
- He varied the transmission frequency. 他变换了无线电传送的频率。
- A measure velocity method is given by michelson intefese to deal with Lasen Doppler frequence change. 通过采用迈克尔逊干涉处理激光多普勒频移信息的方法，实践测量物体运动速度。
- The accident frequency changes at different time and areas in highways, and the high risk group is young and adult males in happening probability, but the older injured has a higher mortality. 高速公路交通事故有时间、地区分布的不均衡性，男性青壮年为发生概率的高危人群，但高龄受累人群的死亡率更高
- The carrier-tracking algorithm is based on AFC. With the switching between wide and narrow FLL , the carrier-tracking loop can achieves good performance whether frequency changes in high dynamic range or it is in stable state. 载波跟踪采用AFC(自动频率控制)跟踪频率变化,宽窄两通道AFC切换方式既可以适应动态条件下的载波跟踪,又能保证稳态条件下对载波频率的精确估计。
- A unit of frequency equal to one cycle per second. 赫兹频率的单位，等于每秒一周
- frequency changing speed control scheme of high voltage 高压变频调速方案
- Fatal accidents have decreased in frequency over recent years. 近年来死亡事故发生的频率已经下降。
