Introduces the basic principle of phase-locked loop and NE564 PLL circuit structure and properties, and the use of phase-locked NE564 demodulating circuit and phase-locked frequency circuit.
介绍了锁相环的基本原理和锁相环ne564的电路结构和性能，及其用ne564构成的锁相解调电路和锁相倍频电路。
This technique is accomplished by word-phrase conversion, making use of the principle of appearance frequency and the ability of word-generation.
本技术是利用语言文字使用的频度规律和单字组词能力，通过字词变换来实现的。
This design is the use of leading correction principle, finally meet the performance index of a control system open loop gain, phase margin, angular frequency requirements.
本设计利用超前校正原理，最终满足对控制系统性能指标开环放大系数、相角裕量、截止角频率的要求。
The cymometer makes use of equal-accuracy design that can overcome the disadvantage of traditional measuring principle, which precision declines as measured signal frequency does.
该频率计利用等精度的设计方法，克服了基于传统测频原理的频率计的测量精度随被测信号频率的下降而降低的缺点。
Making use of seismic frequency as order parameter, the master equation of order parameter which represents regular evolution of seismicity is established by means of adiabatic elimination principle.
对于地震断裂系统，利用地震频度作为序参量，并应用绝热消去法建立了代表地震活动演化规律的序参量所满足的主方程。
As we have learned, breed of this kind of software is various, the principle of place introduction is to use high frequency ultrasonic to come drive midge.
据了解，这类软件品种繁多，所介绍的原理都是用高频超声波来驱蚊。
The circumstances and headway in probe job of near technique around blast shake safety are given. The technical make use of control principle about frequency spectrum property.
重点介绍利用频谱特性控制原理的爆破震动安全新技术探索工作情况与进展。
The circumstances and headway in probe job of near technique around blast shake safety are given. The technical make use of control principle about frequency spectrum property.
重点介绍利用频谱特性控制原理的爆破震动安全新技术探索工作情况与进展。
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