调制的

To improve the bandwidth and power efficiency of conventional QPSK signal, the continuous phase QPSK is proposed.

针对导致传统QPSK信号带宽效率和功率效率低的相位跳变问题，提出了连续相位QPSK， CPQPSK调制。

This system uses FPGA chips as its control center, combined DDS technology this system directly forms SPWM modulated waves to drive contradictorily changed device of IGBT, by changing the range of sine wave to adjust the output voltage to achieve energy saving effect.

本系统利用 FPGA芯片作为控制核心，结合 DDS技术直接形成 SPWM调制波来驱动 IGBT逆变器，通过改变正弦波的幅度来调整输出电压，实现节能效果。

Objective:To evaluate the modulation of motoneurons by contralateral descending activation in neonatal rat spinal cord slices.

目的：探讨对侧腹外侧索下行激活对离体脊髓运动神经元活动的突触调制作用。

We use integrated chip TL494 are the master control chips, by the MOSFET tube constitution inversion electric circuit, has realized the contravariant system's pulse-duration modulation.

我们采用集成芯片TL494为主控芯片，以MOSFET管构成逆变电路，实现了逆变系统的脉宽调制。

To solve these problems, a new method for SVPWM based on 60° coordinate system is presented in this paper.

为解决这一问题，该文研究一种基于60°坐标系的空间矢量脉宽调制方法。

Corncob PH value of modulation techniques and technology research projects.

玉米芯PH值调制技术及工艺的研究项目。

The technique of SONG correlation with excellent discrimination and performance of resisting noise is introduced to the new correlator.

提出一种基于SONG相关的参考图像相位编码条纹调制联合变换相关器。

Effect of intravenous injection of corticosterone on the presympathetic neurons in rostral ventrolateral of rats.

RVLM在抗伤害整合功能中十分复杂［6］，因此CORT在伤害调制中的作用和意义有待于进一步证实。

The analysis and design of a vector modulator based on the novel microstrip directional coupler are presented.

本文介绍了一种基于新型微带定向耦合器的宽带矢量调制器。

Endogenous opiate like substances may be involved in the modulation of the acquisition of CTA.

内源性阿片样物质可能参与了CTA形成过程的调制作用。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。