pulse density

This paper presents a pulse density modulated ( PDM) series resonant inverter developed for plastic film surface treater.

该文介绍了一种采用脉冲密度调制（PDM）控制策略的串联谐振型塑料薄膜表面处理电源的研制。

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Whether the nonuniform pulse density is immaterial , of course, depends on the specific application.

脉冲密度的不均匀性是否有害, 应由具体应用决定.

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The model considered the influences of the mode of reactants supply, the chemical reaction in the combustion chamber, radiation and convection heat loss of the combustion chamber wall, as well as fluid density changes in the tailpipe on stable operation of pulse combustion.

该模型考虑了反应物的供给方式、燃烧室内的化学反应、燃烧室壁面辐射与对流传热损失以及尾管内流体的密度变化对脉动燃烧稳定运行的影响。

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The pulse crowding effect is analysed by circular mode of magnetization in high density longitudinal magnetic recording

用园形磁化模式分析纵向高密度磁记录中的脉冲密集效应

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Concerns BEM ( boundary element method) of electric current concentrating effect and temperature rising analysis at the crack tip with high density electric pulse.

给出金属板在高密度电流脉冲下裂纹尖端电流集肤效应和急剧发热升温解析的边界元法。

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The results showed that the kerf width increases with the increase of the power density, pulse frequency and pulse width;

结果表明，缝宽随激光功率密度、频率以及脉宽的增加而加大；

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Based on Statistical Theory of Pulse Signal Flow, a statistical model for one-dimension probability density function ( PDF) of electromagnetic interference pulse flow caused by group electromagnetic interference sources is discussed in this paper. This model has universality.

使用脉冲信号流统计理论，建立了由群体电磁干扰源产生的电磁干扰脉冲流的一维概率密度函数（pdf）统计模型，具有普遍性特点。

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Results showed that W/ Cu FGMs sustained the mechanical integrity after 200 to 700 times of cyclic heat loads with 100~ 400 MW/ m 2 power density and 4 ms pulse width.

结果表明：在100～400MW/m2的瞬时（脉冲宽度为4ms）热负荷作用下，经过200～700次热循环，未发现W/Cu复合体的开裂。

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Ferroelectrics cathode is a high-density electron beam pulse source. It has many advantages when comparing with traditional thermionic cathode.

铁电阴极是一种强流的脉冲电子束源，同传统的热电子阴极相比具有许多独特的优点，因而在高能物理、电子学、真空微电子等领域有可能取代普通热阴极及场发射阴极。

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Long-pulse laser has high total energy, but due to the low power density, K9 laser absorption is very small, so the damage is not significant.

而长脉冲虽总能量很高，但由于功率密度很低，K9对激光吸收很小，所以往往造不成显著损伤。

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This paper focuses on the large power AFW three-dimension wide-area regulation and control system based on blade precision processing, The parameters such as amplitude, frequency and width which determine the pulse power density could be regulated and controlled automatically for wide ranges.

本文研究了基于叶片加工的大功率脉冲激光幅频宽三维广域调控系统，决定脉冲功率密度的幅值、频率和宽度等参数可大范围自动调控。

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