vt. beat
misc. difference frequency ; beat frequency ; slip frequency
文章详细信息 关键词： 光速;;调制;;差频;;数码 [gap=423]Keywords: light speed;modulate;beat frequency;digital
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外差频率 [通信] heterodyne frequency
差频式计数器 beat counter
外差频率计 heterodyne frequency meter
差频电疗机 beat frequency electrotherapy unit
零差频选通 homostrobe ; heterostrobe
差频频率计 beat frequency meter
转差频率 slip frequency ; frequency ; miscroprocessors
差频起伏 difference frequency fluctuation
差频振荡 difference frequency generation
Laser at eye-safe wavelength of 1.44μm is strong absorbed in water and can output middle-infrared laser as a pump souse in difference-frequency generation. So it was widely used in production, medical, pollution monitoring and military.
1.44μm激光属于人眼的安全波段，能够被水分子强吸收，并且作为泵浦源，可以差频产生中红外激光，因此在医疗、环保、军事等领域有着重要的应用前景。
参考来源 - 1.44μm固体激光器及其在差频技术中的应用·2,447,543篇论文数据，部分数据来源于NoteExpress
给出了用差频延时法测距的距离折射误差计算公式。
A formula of atmospheric refraction error of range measured by difference frequency delay method is presented.
提出一种通过矢量控制和差频控制原理控制的双电机传动系统。
This paper provides both vector control and frequency difference control to modulate the system of double motors transmission.
多频测距解模糊的实现方式通常有两种：二次差频和参差双频。
The realization mode of solving ambiguity for multiple frequency ranging usually has two kinds:quadric difference frequency and uneven dual frequency.
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