查询词典 frequency modulation

Laser printers by laser, acousto-optic modulator, high-frequency drivers, scanners, desynchronizers and acoustooptic, etc., it is to interface circuits for the binary lattice information modulation in laser beam, scan-to-peripherin-seadweed.

激平打印机是由激平器、声平调制器、高频驱动、扫描器、同步器及平偏转器等构不败，其功用是把接口电路送来的二进制不面阵陈闻调制在激平束上，之后扫描到感平体上。

The polarization and magnetic rotation in highly nonlinear photonic crystal fibers were investigated by frequency multiplication method based on the principle of magneto-optical modulation, joining with Lissajous figure method, and by investigating temperature characteristic and spectral characteristic.

运用基于磁光调制原理的倍频法，结合利萨如图形方法，并通过温度特性和光谱特性的考查，对高非线性光子晶体光纤的偏振效应、磁旋光效应进行了实验研究。

The polarization and magnetic rotation in some visible step-index single-mode fibers were investigated by frequency multiplication method based on the principle of magneto-optical modulation and with Lissajous figure method.

运用基于磁光调制原理的倍频法，并结合利萨如图形方法，对几种可见波段单模阶跃折射率光纤的偏振效应、磁(来源：A25BC论文网www.abclunwen.com)旋光效应做了考查和研究。

Base on the principle, the main circuit and control circuit of 2-phase hybrid stepping motor systems are designed. The system can realize many functions such as fix-frequency pulse width modulation, current sampling, power magnifying, ring distribution, producing control signal, and so on.

完成了对二相混合式步进电动机微步驱动系统主电路及控制电路的具体设计，实现了恒频斩波、信号检测、环形分配、微步信号的产生等功能，并搭制了实验电路进行实验验证。

In order to confront with the increasingly complicated electromagnetic environments and adapt to the development necessary of the integrative electronic warfare,this paper studies the integrative reconnaissance technology for radar and communication signals from single-platform,analyzes the characteristics of radar and communication signals in detail from the different aspects of the electromagnetic frequency band,function,power,signal waveform and modulation mode,researches some key technologies to realize the integrative reconnaissance for radar and communication signals,such as integrative microwave front technology,digital receiver technology,digital signal processing and modularity technology,especially analyzes and researches the integrative signal sorting and identification technology deeply.

为对抗日益复杂的电磁环境，适应一体化综合电子战发展的需要，对单平台雷达/通信侦察一体化技术进行了研究。从电磁频段、功能、功率、信号波形及调制方式等不同角度，详细地分析了雷达与通信信号的特点；对实现雷达/通信侦察一体化的一体化微波前端技术、一体化数字接收机技术、一体化数字信号处理技术、模块化技术等关键技术进行了研究，尤其是对一体化信号分选、识别技术进行了深入的分析研究。

The IAM-93516 is ideally suited for frequency down conversion forbase station radio card receiver, microwave link receiver, MMDS,modulation and demodulation for receiver and general purposeresistive FET mixer, which require high linearity.

IAM-93516是理想的适合无线电基站图表接受器、微波连接器、MMDS的下变频器和接受端的调制器、解调器，一般的用途FET混频器，需要有很到的线性度。

The IAM-93516 is ideally suited for frequency down conversion for base station radio card receiver, microwave link receiver, MMDS, modulation and demodulation for receiver and general purpose resistive FET mixer, which require high linearity.

IAM-93516是理想的适合无线电基站图表接受器、微波连接器、MMDS的下变频器和接受端的调制器、解调器，一般的用途FET混频器，需要有很到的线性度。

In order to satisfy the future requirements of fixed broadband wireless Access systems for high data-rate and high frequency efficiency, technical renovation on the physical layer and control layer is demanded. The paper analyzes relevant technologies sUCh as the high spectrum utilization antenna, robust time-delay extension modulation, equalization and encoding, highly efficient multi-address access and adaptive linking.

为了满足未来固定宽带无线接入系统高数据速率传输及高频谱利用率的要求，就需要在物理层和媒体访问控制层进行技术上的革新，所涉及的关键技术包括：高频谱利用率的天线系统、具有时延扩展鲁棒性的调制方式、均衡与编码技术、高效的多址接入技术、自适应链路技术等。

White noise generator, can be amplitude modulation, frequency, phase.

白噪声发生器，可以调制幅值，频率，相位。

The modulation of sound properties over a wide range of time scales is one of the most obvious characters of Oscine passerine\'s vocal, whose song contains many different kinds of syllables that consist of many more multiple song phrases. In oscine passerine, ipsilateral projections of RA to NXIIts innervates the ipsilateral syringeal muscles exactly, and thus they have strong ability of vocal control with variable tones, high frequency and higher lever of quality.

鸣禽鸣啭的最大特点之一便是其单次鸣唱时间长，鸣唱所包含的音节数量和音节种类繁多，因而由这些音节所组成的句型结构也是复杂多样富于变化，且由于NXIIts严格的侧别控制(每一侧核团只支配同侧鸣肌)，使其具有更强的控声能力，其鸣声音调变化幅度大，频率高，品质因数大，音色好，因而其鸣声也悦耳动听。

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％。