查询词典 frequency modulation

An inductance frequency-modulation displacement sensor is used to measure the deformation with on-line or off-line mode.

采用了电感调频式位移传感器，可对零件的变形进行在线或离线测量。

And various limiting factors are analyzed. It is found that the stability is mostly limited by the noise of photodetector and frequency modulation in the experiment. Several methods of improved stability are also presented here.

从理论上定性分析了频率稳定度受到的各种限制因素，最后得出本实验中频率稳定度主要受频率调制和探测器噪声限制的结论，同时给出了提高频率稳定度的方法。

Considering the ionospheric refractive index in geomagnetic field, the radiowave polarization plane rotation has been calculated. For linear frequency modulation pulse signal, the expression of Doppler shift error due to ionospheric dispersion characteristics is derived.

本文还计算了考虑地磁场时电离层双折射指数特性引起的电波极化面旋转角，推导出对于线性调频脉冲信号电离层介质色散特性引起的合成孔径时间内多普勒频移误差的表达式。

Through proper adjustment to frequency modulation amplitude,the Kerr-effect-induced bias can be effectively reduced.

通过适当调节两光束的频率调制幅度，可有效地实现克尔效应误差的消除。

The model and the related conclusion provide the theoretical basis for the manufacturing technology of semiconductor microcavity laser,improvement of high frequency modulation proper ty and optimization of device constitution.

该模型及有关结论为半导体微腔激光器的工艺制作，改善的高频调制特性和优化器件结构提供了理论依据。

Vortex folwmeter ; optical-fiber ; light-frequency modulation ; vortex shedder

涡街流量计；光纤；光频率调制；涡街发生体

We studied the bichromatic electromagnetically induced transparency in our new MOT system. The dispersive curve of bichromatic EIT was measured by frequency-modulation spectroscopy.

在新实验系统上进行了双色电磁诱导透明实验，利用频率调制谱的方法测量了双色EIT的色散曲线。

The products shows professional GPS navigator, GPS burglarproof without monthly rent, Bluetooth hand free phone, move backward image systematic area lead line; make a dash across the red light prewarning, MP3/MP4 amusement audio-visual broadcast, FM voice frequency modulation launch function and etc.

感谢您选用本公司生产的搜虎汽车智能助理。本产品具有专业GPS导航，无月租型GPS防盗，蓝牙免提电话，倒车影像系统带引导线，超速闯红灯预警，MP3/MP4娱乐影音播放，FM声音调频发射等功能。

A standard encoding method used in standard 8 inch floppy disk drive with the bit density equivalent to the IBM 33FD floppy disk, and the use of frequency modulation encoding is specified by international standard.

在标准的8英寸软磁盘机中，位密度与IBM 33FD软磁盘机相当时所使用的标准编码方式，在国际标准中规定使用调频制。

Introduces the height finding theory of the continuous wave frequency modulation altimeter and the pulse radar altimeter,analyzes the reason why the two kinds of altimeters were used in complex terrain to cause errors,and also gives out the experiment result that the plane mounted with the two kinds of altimeters flew in complex terrain section occasion.

介绍了调频连续波高度表和脉冲雷达高度表的测高原理，分析了两种体制高度表在复杂地形下使用时产生误差的原因，并且给出了两种高度表在复杂地形剖面场合下的机载试验结果。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。