Pulse width Modulation device is a circuit which can produce square wave signal with fixed period and adjustable pulse duration ratio (pulse width).
脉宽调制器是一种能够产生周期固定而占空比(脉宽)可调的方波信号的电路。
The peak current and pulse duration of single pulse determine the size and depth of discharge crater, so they determine the machining surface roughness and size and shape accuracy.
放电单脉冲的电流峰值和脉宽决定了单个电火花蚀坑的大小和深度，从而直接决定了工件的加工表面粗糙度、形状精度和尺寸精度。
The pulse duration and the spectral phase are measured by SPIDER.
利用SPIDER装置测量了出射脉冲的脉宽和光谱相位。
The effect of pulse duration and laser beam dimension on the pressure signal is discussed.
讨论了激光脉冲持续时间，激光束宽度对压力信号的影响。
Influence of pulse duration on deflecting electric field PIII was investigated in this paper.
研究了采用偏转电场法注入时注入电压脉冲宽度对注入效果的影响。
The results show that the movement of positive ions is much weaker than that of electrons even discharged under big pulse duration.
结果表明在放电通道中主要是电子在运动，即使在大脉宽条件下放电正离子的运动也远弱于电子的运动。
The singularity is located nearer to the central axis for the pulses with higher order transverse modes and shorter pulse duration.
对于啁啾量相同的脉冲，脉冲宽度越小或模指数越大其奇异性位置离光束中心越近。
The value of surface roughness is influenced by discharge current which involves discharge energy, pulse duration and polarity effect.
在加工过程中，表面粗糙度会受到放电电流的影响，其中包括放电电流能量、电流脉宽及电流极性的影响。
By assuming a Gaussian temporal shape of laser pulse, some numerical results of the threshold dependence on pulse duration are presented.
通过假设激光脉冲为高斯型，数值计算得到了激光脉冲宽度与激光辐射损伤间的依赖关系。
We also investigate the relationship between the total attenuation coefficient and the energy density, pulse duration, and pulse repetition.
我们研究了衰减系数和能量密度、脉冲宽度及脉冲频率之间的关系。
The principle of using sequential logic circuit and 8031 monolithic computer for realizing continuous pulse duration measure are introduced.
主要介绍了用时序逻辑电路实现连续脉冲宽度测量的工作原理，并讨论了采用8031单片机的实现方案。
Selection of laser pulse shape pulse duration flux density are discussed in pulsed laser microwelding and the experimental results are given.
讨论了脉冲激光微型焊接中，对于激光的脉冲形状、光脉冲宽度、光通量密度等的选择，并给出了实验结果。
The value which was calculated using this approximation formula of pulse duration was close to that of solving the rate equations by computer.
使用脉宽表示式计算的结果与计算机数值计算相符。
Furthermore, it can be predicted that the continuous or quasi-continuous laser pulse will be obtained under the proper excited pulse duration.
并进一步表明如果选择合适的激发周期，有望实现连续或准连续激光输出。
The heat conduction equations were developed for the pulsed laser beams and pulsed ion beams with the various pulse duration and energy density.
在脉冲激光束和脉冲离子束辐照条件下，针对不同脉冲作用时间和能量密度建立传热模型。
The transversal intensity distribution remains nearly unchanged with increasing chirp parameter for relatively large values of the pulse duration.
脉冲宽度较大时，啁啾参数增大对横向光强的影响减小。
The damping can obviously decrease the peaks of displacement and acceleration of nonlinearcushioning system, but has on effect on the pulse duration.
阻尼使非线性包装系统位移峰值和加速度峰值明显降低，但对脉冲持续时间几乎无影响。
The damage morphology, and threshold fluence as a function of pulse duration and the dependence of ablation depths on the pulse fluences are measured.
利用原子力显微镜和扫描电镜观察了材料的烧蚀形貌，测量了破坏阈值与脉冲宽度、烧蚀深度与脉冲能量的依赖关系。
The experimental results show that decreasing pulse duration and voltage can enhance the localization and improve electrochemical micro-machining accuracy.
结果表明，减小脉冲宽度，降低加工电压，可以提高微细电解加工的精度。
Thee-beam peak current is 7A measured behind a 6mm diameter e-beam window. The pulse duration (FWHM) is 6-8ns and the maximum electron energy is about 107keV.
在直径为6毫米的电子枪窗口后测得电子束峰值电流为7安，脉冲的半峰宽为6～8毫微秒，最大电子能量约为107千电子伏特。
Moreover, the output pulse duration can be adjusted within specified range, the extinction coefficient reaches 50000, and the transmittivity is higher than 90%.
输出宽度可通过延时在一定范围内调节，消光比达50000倍，透射率大于90%。
The influence of the principal parameters of optical chirp reversal devices on ability to restore signal wave form and pulse duration has been analysed and simulated.
分析和数值模拟了用瞬态简并四波混频实现光学啁啾反转的器件的主要参数对恢复信号波形和脉冲宽度能力的影响。
It was concluded that the effects of peak pulse acceleration, pulse duration, Angle of tilted support spring and damping ratio of the system are particularly noticeable.
研究表明：无量纲脉冲激励幅值、无量纲脉冲激励周期、系统支承角及阻尼等对系统响应峰值影响显著。
The effect of pulse frequency and pulse duration ratio on the abrasion resistance of gold coatings is investigated with pulse plating in cyanide free and trace cyanide baths.
研究了脉冲电镀在微氰镀金，无氰镀金体系中脉冲频率、脉冲占空比对镀金层耐磨性的影响。
In addition to the current source, the detecting instrument mainly contains the circuits for temperature compensation, pulse formation, pulse duration discrimination and encode, decode.
检测仪器除了恒流源外，主要还有温度补偿、脉冲形成、脉宽鉴别以及编码、译码等电路。
The conversion efficiency of the average power is 4.2% from pump diode to OPO signal output and the signal pulse duration is about 13 times shorter than that of the depleted pump light.
实验中获得的由二极管注入泵浦功率至opo信号光平均输出功率的转换效率达4.2%，信号光脉冲宽度比消耗后的泵浦光脉冲宽度压缩了13倍。
Effects of pulsed laser parameters such as laser wavelength, beam spot size, pulse energy and pulse duration on threshold energy in laser simulating Single Event Effect testing are analyzed.
分析了在激光模拟单粒子效应试验中激光波长、束斑大小、脉冲能量、脉冲宽度等脉冲激光参数对阈值能量的影响。
The close correlations between laser energy density, pulse duration, interaction time and junction depth, dopant distribution as well as junction resistance are mainly emphasized in this paper.
着重强调了激光能量密度、脉冲宽度、作用时间等工艺参数与结深、杂质分布以及结电阻之间的密切关联。
The close correlations between laser energy density, pulse duration, interaction time and junction depth, dopant distribution as well as junction resistance are mainly emphasized in this paper.
着重强调了激光能量密度、脉冲宽度、作用时间等工艺参数与结深、杂质分布以及结电阻之间的密切关联。
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