Negative feedback has been widely used in amplify circuit, but in wave-generating and wave-transforming circuit, it should adopt positive feedback.
在放大电路中采用负反馈，而在波形产生和波形变换的电路中则需要采用正反馈。
Friday's fictional scenario starts with a major earthquake off the coast of Huntington Beach, California, generating a tidal wave and an oil spill.
周五的演习假设加州亨廷顿海滩发生大地震，引发海啸与原油泄漏。
Based on fractal geometry, a method for generating wave lines in mechanical drawings is presented.
基于分形原理，提出机械制图中波浪线的生成方法。
The results show that the shock wave structure is unsteady in shock induced hypersonic turbulent separated flows, generating an intermittent region.
结果表明：在激波诱导的高超音速湍流分离流中，激波结构是不稳定的，产生一个间歇区域。
An accident of overvoltage reflected wave occurred in Chongqing Iron and Steel Company is presented. Generating reasons of overvoltage reflected wave and protective measures are discussed.
介绍了在重钢发生的过电压反射波的危害实例，探讨了过电压反射波的产生原因及预防措施。
This paper presents the design of thyristor triggering circuit for a variable speed constant frequency (VSCF) wave energy electricity generating system.
介绍了变速恒频波浪能发电系统的晶闸管触发电路设计。
Demonstrates in theory the feasibility of generating the traveling wave used for linear traveling wave ultrasonic motors.
从理论上证明了用于直线型行波超声马达的波形成的可行性。
The utility model discloses an ocean wave electricity generating transformer device that transforms the ocean wave energy into electricity.
本实用新型公开了一种利用海浪能量转换为电能的海浪发电转换装置。
These signals provide an important reference of the gain of antenna, the time reference, the phase reference and the frequency of carrier wave for generating stimulant echo signal.
这些信号分别为模拟回波信号的生成提供了天线增益大小、时间基准、相位基准和载波频率大小等重要的参考信息。
Although the system is specially designed for simulated ocean wave generation, the control scheme can also be directly applied to generating random signals in many other fields of test engineering.
尽管这一控制系统是专为产生模拟海浪而设计的，但其控制方案也可直接用于其他测试技术领域，以产生“随机”信号。
The power generation equipment with ocean wave buoy is mainly applied in generating power in shallow sea region.
本发明海洋波浪浮筒发电装置主要应用于浅海区域的发电。
A rectangular wave generating circuit has been designed with MOSFETs, half bridge driver chip LM27222 and gate drive transformer.
利用MOS管、半桥驱动芯片LM27222、栅极驱动变压器等器件，设计了变极性矩形波发生电路。
Evaluation results show that the turbulence in convection zone is capable of generating enough wave energy to supply coronal energy lose due to convection and radiation.
利用理论结果的计算表明，对流层的湍动对流完全有可能激发足够的波能去补充日冕中等离子体对流和辐射造成的能量损失。
According to the generating theory of SHEPWM wave, a design of digital firing circuit on SHEPWM based on CPLD is implemented and correctness of design is verified by practical experiment.
根据SHEP - WM波形发生原理，设计和实现一种基于CPLD的SHEPWM数字触发电路。通过实际的现场实验，验证设计的正确性。
As the natural sampling method generating SPWM pulses closer to sine wave is impractical in real-time control, the regular sampling method with poor precision is usually adopted in practical projects.
自然采样法产生的SPWM脉冲效果最接近正弦波，但工程中不利于实时控制，在实际中常采用的规则采样法精度不够高。
This paper presented a new method of generating synthetic, seismograms of wave theory in frequency domain and gave the diffraction equation in frequency domain, which is equivalent to Kirchhoff one.
本文提出一种新的方法，在频率域中制作波动理论的合成记录，给出了与克希霍夫绕射波方程等价的频率域中的绕射波方程。
In this paper, the first experiment of generating the phase conjugated backward wave by degenerate four-wave mixing in chlorophyll solution is reported.
本文报道在叶绿素溶液中用简并的四波混频得到位相复共轭后向反射波的首次实验。
The method of generating seismic wave by superposing impulse component and wide band component is used to study the interaction characteristics of near-filed ground motion in this paper.
运用脉冲分量与宽频分量叠加合成地震波的方法，来研究近场地震动的作用特性。
The invention relates to a soldering tin furnace part, in particular to a tin wave generating device on a soldering tin furnace.
本发明涉及焊锡炉部件，尤其是一种焊锡炉上的锡波发生器。
The invention relates to a soldering tin furnace part, in particular to a tin wave generating device on a soldering tin furnace.
本发明涉及焊锡炉部件，尤其是一种焊锡炉上的锡波发生器。
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