查询词典 modulation

An algorithm based on Support Vector Machines for recognition of analogue modulation signals is presented.

提出了一种基于支持向量机的多类模拟调制方式识别算法。

Both NMDA and non-NMDA receptors are involved in transmission andor modulation of spinal visceral nociceptive information and non-NMDA receptors may play more important role than NMDA receptors.

NMDA和非NMDA受体均参与介导脊髓内脏伤害性信息传递，而非NMDA受体的作用更强。

Spectrum control technology and its application researchBasic theory of smoothing by spectral dispersion in high-power laser system was studied. Periodical frequency modulation was obtained by chirped pulse stacking, and novel special gratings were proposed here to obtain angular spectral dispersion and temporal smoothing of focal spot.

并在国际上首次成功地应用于激光聚变高功率激光系统中。3、激光脉冲光谱控制技术及应用研究研究了高功率激光光谱色散平滑的基本理论，提出利用堆积啁啾脉冲的周期性光谱调制特性和新颖特殊光栅实现光谱角色散和激光束远场焦斑的时间平滑。

Amplitude modulation network separation process, dot point allocation error, or a net angular distance is less than 25 °, moire began to clear.

调幅网分色工艺，网点角度分配出错，或每一网角距离小于25°，龟纹就开始明显。

By the analysis of muscarinic receptor-mediated currents, the data provide evidence that muscarinic cholinergic mechanisms play a prominent role in the modulation of the excitability of MVNn and also offer a new idea for the efficacy of anticholinergic drugs.

通过对MNVn中M受体通道电流性质的分析，从而进一步揭示毒蕈碱样胆碱能机制在MVNn的兴奋性调节作用，并为临床抗胆碱药物的应用提供新的思路。

As substitute for fluorite lens, a double-layer DOE is used in a long focal-length apochromatic objective lens. The modulation transfer function of this hybrid optical system is suggested for evaluating diffraction efficiency of the multilayer DOE. The results show the diffraction efficiency has a wide and symmetrical distribution in the whole waveband.

利用双层衍射光学元件替代萤石透镜校正混合光学系统的二级光谱，设计并制作了一套长焦距物镜，并利用系统调制传递函数评价了多层衍射光学元件衍射效率，测试结果表明衍射效率在整个设计波段内以较高的数值平均分布。

In physical layer transmission rate optimizing, this paper adopt a Adaptive Modulation and Coding algorithm ARF.

对物理层传输速率优化方面本文提出了一种基于 802.11n 的 ARF 算法。

The timers can be used in various combinations of astable or monostable circuit connections, with or without modulation, for extremely flexible waveform control.

定时器可用于各种非稳和单稳电路的组合中，无论调节与否，都可实现高度灵活的波形控制。

The device further comprises a modulation unit (3) coupled to the heating control unit (2) for producing the control signal in response to an audio signal.

该装置还包括耦合到热控制单元(2)用于响应音频信号产生控制信号的调制单元(3)。

It locks the frequency of the carrier-wave at 35MHz.The stabilization of the carrier-wave can be 4×10-5,the accuracy can be 3×10-5.The frequency modulation and the confection of the carrier-wave are realized by the capacity-changing diode V149 and the integration voltage-control oscillator MC1648 chip.The end power amplifier uses the audion 2SC1970 to make it work in the third magnifying state,it improves the efficiency of the magnifier and the power of the output reaches the design demand.

发射部分采用锁相环式频率合成器技术， MC145152和MC12022芯片组成锁相环，将载波频率精确锁定在35MHz，输出载波的稳定度达到4×10-5，准确度达到3×10-5，由变容二极管V149和集成压控振荡器芯片MC1648实现对载波的调频调制；末级功放选用三极管2SC1970，使其工作在丙类放大状态，提高了放大器的效率，输出功率达到设计要求。

Chimborazo and Cotopaxi, took me by the hand.

越过琴博腊索山和科托帕克西山。

This car is in a good condition.

这辆车的状况很好。