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In room temperature, the pulse needs thousands of voltages and more then ten thousand amperages, which needs prodigious and costly electric current pulse generator.

但在室温条件下使钢的基体组织发生变化，需要数千伏以上电压、上万安培的电流才能达到，这需要庞大的脉冲发生器机组和很高的成本造价，而在800～900℃的高温条件下对合金试样加以千安级以下脉冲电流同样可以达到目的。

The experiment was performed at the Asterix IV iodine laser with a prepulse 5 ns before the main pulse. Under optimum focusing conditions for main pulse and prepulse the X-ray laser beam splits into two beamlets along the target surface at its output end of the 2.5 cm long plasma column. The splitting was still observed when the prepulse alone was defocused.

实验发现在抽运激光主、预脉冲最佳聚焦条件下， X射线激光束在2.5 cm长的线状等离子体输出端沿靶面方向分裂成两束；在抽运预脉冲单独散焦条件下，仍然观察到这一分裂现象；但是当抽运主、预脉冲同时散焦时，这一分裂现象逐渐消失并获得了半宽度只有40 μm的非常窄的近场像。

In order to testify a pulse contrast measurement's dynamic range in a simple and clear way, this article uses a series of pulses with equal intervals and equal ratios of intensity as a criterion, which reflected from back surface of a 0°reflector, and first discuss the calibration of pulse contras measurement and verify it by experiments in the world.

为了从一个简洁明了的角度来判断信噪比测量系统的动态范围，本课题还将0°反射镜后表面的的二次反射光形成的等间隔、等比例衰减的脉冲序列作为基准，在国际上首先开展了信噪比测量系统的动态范围标定方法的研究工作，并通过实验加以验证。

The gating of PMT was realized with the method of adding the applied gating and gain-control nano-second pulse, and by changing the electric potential difference between the cathode and the first dynode. The gain control of PMT was complemented by the aid of adding the high voltage pulse to the last dynode of PMT to change the electric potential difference between the last dynode and front dynode.

采用给PMT外加选通和变增益纳秒电脉冲的方法，通过改变PMT光阴极与第一打拿极之间电势差，实现PMT选通；借助给PMT最后一个打拿极外加变增益高压脉冲改变PMT最后一个打拿极与前置打拿极间的电势差，实现PMT变增益。

Pulse spray water; is the application of pulse spray fire-extinguishing mechanism of development of a new generation of portable fire fighting equipment.

脉冲喷雾水枪；是应用脉冲喷雾灭火机理研制的新一代便携式灭火装备。

The influnces of laser parameters including pulse frequency,pulse width and scanning speed were studied.

研究了激光工艺参数(包括脉冲频率、脉冲宽度、扫描速度等)对熔覆层物相的影响。

To meet with the requirement of PECF finishing, pulse power source with high frequency, narrow pulse width and high current is designed.

为了满足螺旋锥齿轮等大型零件的脉冲电化学光整加工的要求，设计了高频、窄脉宽、大电流的脉冲电源。

The calculation results predict that the background gas in the tube is one but not the most important factor resulting in pulse shortening, and in order to broaden the pulse width of the gas-filled RBWO, the pressure of the filled gas must be controlled in a proper value.

从计算结果可以看出，器件内残留的中性背景气体是产生脉冲缩短的原因之一，但并不是最重要的因素；对于充气的相对论返波管，为了展宽脉宽，充气气压必须控制在一个适当的水平。

Firstly, performance of Single Pulse Head Detection got analyzed, because of its lower reliability, Multi-Pulse Head Joint Detection got analyzed too.

首先，分析了单脉冲头检测的性能指标，由于其可靠性太低，转而研究多脉冲头联合检测算法，分析表明其性能得到了大幅提高，但其仍存在一些不足。

It is a kind of electromagnetic mechanical device turning dispersed electric pulse signal into corresponding angle displacement or line displacement to Electric motor which by stepwise, it is one introduction that output pulse corresponding increment drive component.

步进电动机是一种将离散的电脉冲信号转化为相应角位移或线位移的电磁机械装置，它输出的角位移与输入的脉冲数成正比，是一种输入与输出脉冲对应的增量驱动元件。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐