脉冲

In consideration of the in-pulse phase modulation and Doppler frequency rate-of-change's subtleness, a fast and accurate algorithm is proposed. The influence to parameter estimation with phase modulation is dismissed by time domain correlation between neighboring pulses. Signal noise ratio is increased by frequency domain accumulation.

该文针对信号脉内相位调制和多普勒频率变化率信息非常微弱的特点，提出了一种快速高精度估计算法，通过相邻脉冲间的时域相关消除了相位调制对参数估计的影响，频域积累增强了信噪比，利用脉冲间的相参特性进行频谱相关消除了相位模糊，并放大了多普勒频率变化率信息。

A kind of high speed sulphamate nickel-based electrolyte is chosen as basal electrolyte, the influences of plating process parameters on the micro-hardness of the nickel deposit have been studied by orthogonal experiments. It is concluded that the main influence factors on the micro-hardness of the nickel deposit are sulphamate concentration and electrolyte temperature, the deposition rate and quality in single-pulse mode are higher than that in DC power and double-pulse mode.

选择以氨磺酸型高速镀镍液作为基础镀液，通过正交试验研究了电镀工艺规范对镀层显微硬度的影响关系，试验结果表明：镀液主盐氨基磺酸镍浓度和镀液温度是影响镀层硬度的显著因素，单脉冲供电模式下的电镀沉积速率和镀层质量优于直流和双脉冲模式。

Objective To compare the curative effects of intense pulsed light and pulsed dye laser in the treatment of telangiectasia.

利用强脉冲光嫩肤仪和染料脉冲激光机治疗60例面部毛细血管扩张症病例。

The appropriate propagation delays are 4.0ns for the unclamped pulse, and 4.8ns for the clamped (2X overdrive) pulse yielding an overdrive recovery time of 800ps.

适当的传播延迟为4.0ns的钳位脉冲，并4.8ns的钳制（2倍过载）脉冲产生的800ps过驱动恢复时间。

Differential pressure compensating pump is a new one that can generate underbalance low pulse, it is also called underbalance pulse deep oil well pump.

压差补偿泵是一种能产生负压低脉冲的新型结构的抽油泵，又名负压脉冲深井采油泵。

The possibility for preparing nanocrystalline materials by jet-electrodeposition technique is also analyzed. Corresponding the research in the article, a set of unsubmerged single circular jets equipment was designed. In chapter 2, jet-electrodeposition was carried out both under direct current condition and pulse current condition. A series of samples for nanocrystalline nickel coating were prepared under different deposition parameters.

在第二章中，采用喷射电沉积技术分别使用直流和脉冲两种波形的电流进行电沉积，改变电沉积工艺参数制备了一系列的纳米晶镍镀层样品，使用X射线衍射、扫描电镜、透射电镜、维氏硬度计等仪器对镀层微观结构和性能进行了分析和表征，主要考察了在直流喷射电沉积和脉冲喷射电沉积方式下，沉积参数如电流密度、电镀液喷射速度等对镀层微观结构和显微硬度的影响。

A bipolar pulse gener AT or with A valanche Transistor is introduced which uses two paralleled tubes to enhance the amplitude of the output pulse. Meanwhile the power supply voltage can be adjusted, so better synchronous triggering can be performed.

介绍了一种双极性雪崩三极管脉冲产生器电路；电路采用双管并联以增大输出脉冲的幅度，并采用调节电源电压的方法来达到良好的同步触发。

The cortex, or outer layer of the brain, houses a thicket of 10 billion vinelike nerve cells, which communicate by relaying chemical and electrical impulses.

皮层或大脑的外层，收藏着密密的100亿个蔓藤般的神经细胞，通过中继化学脉冲和电脉冲进行交流。

The steady state and dynam ic characteristics of ASVG are analyzed with the help of this model.

通过对仿真结果的分析，得出了 ASVG的输出电压与它和系统接入点电压间的相角差、ASVG晶闸管触发脉冲、触发脉宽之间的关系，这为ASVG的触发脉冲和触发脉宽的设计提供了依据。

It is concluded that the material removal of the process depends mainly on the ablated crater which is made of single pulse of laser and is not influenced by the parameters of the motion of workpiece.

因此，激光烧蚀成形三维表面时主要取决于单个激光脉冲烧蚀材料而形成的凹坑，每个脉冲的作用深度基本上不受切削运动参数的影响。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。