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- frequency changing circuit [电] 变频电路
- 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。
- Yes, no need to change circuit board, just software/firmware upgrade. 那只是更新版本就够了吗？机板是不用换的哦。。。
- Abstract This paper gives two kinds of single operational amplifer ? current-mode active filter circuits. They can realize lowpass, highpass and ? bandpass without changing circuit topology and element. 摘要提出两种使用单运放的电流型滤波电路;每种电路均可同时实现带通、低通和高通滤波功能.
- 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。
- Nonpolar, standard, used in polarity reverse and change circuits. 无极性产品，标准品，用于极性翻转或极性变换的电路中。
- The hardware is made of S3C2410, amplify circuit of sensors, AD/DA change circuit, parameters-input module and LCD screen. 呼吸机硬件由S3C2410处理器、传感器信号放大电路、AD/DA电路、参数输入模块和液晶屏组成。
- Nonpolar,standard ,used in polarity reverse and change circuits. 无极性产品，标准品，用于极性翻转或极性变换的电路中。
- Goldstine called: "one of the most important master's theses ever written ... a landmark in that it changed circuit design from an art to a science". 病态的恐惧心理是造成战争的根源。
- 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。
- What still have family store is marble, change circuit is boredder, kongfu does not say greatly, destructive marble should match unvarnished essential impossible. 还有人家铺的是大理石，更换线路就更烦人了，功夫大不说，破坏的大理石要配原样的根本就不可能。
- 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
- Non-polarized Standard series, used in polarity reverse and change circuits. 无极性，标准品，用于极性翻转或极性变换的电路中。
- 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。
