Great interest is focused on femtosecond laser micro-nano fabrication due to the ultra-short time scale and ultra-high peak power density characteristics of the femtosecond lasers.
飞秒激光由于其超快时间特性和超高峰值功率特性在精密微纳加工领域引起了人们广泛的重视。
The changes of peak pressure depending on the laser power density were studied.
讨论了激光功率密度的变化对冲击波峰值的影响。
The calculation indicates that the main parameter effecting laser output power is the peak electron temperature, while the limitation of repetition rates is related to the initial electron density.
通过计算揭示出影响激光输出功率的主要因素是峰值电子温度，而重复频率的限制主要取决于初始电子密度。
It is shown that the phase noise spectrum density shift periodicity with the length of external cavity and the peak value of power spectrum density varies considerably with the feedback coupling rate.
这表明相位噪声功率谱密度随外腔长度而周期性地漂移，且功率谱密度的峰值随外部反馈耦合率而发生很大的变化。
Then, the power spectral density (PSD) of the acceleration at ground level is evaluated by an iterative approach according to the principle of equivalent peak acceleration.
然后，根据加速度峰值等效原则，选代计算得到地面的加速度功率谱密度曲线；
The influence of motor type to the thermal load and the effective material peak-value power density is analyzed, and the dimensions of the motor are selected.
通过对电动机结构型式与热负荷、有效材料峰值功率密度的分析，确定了电动机的外形尺寸。
There is a sharp peak in the power spectral density of da- ta. It is a narrow band random vibration which depends on t…
文中还讨论了车轮振动加速度功率谱密度峰值的性质，由于履带节的作用使车轮产生与车速有关的窄带随机振动。
With the rapid improvement of the peak performance on high computing density servers, the volume and power consumption of servers also increases sharply.
随着高计算密度服务器的峰值性能急剧提高，服务器的体积和功耗也急剧增加。
With increasing longitudinal distance, the velocity Power Spectral Density (PSD) peak shifted to lower frequencies.
随着流向距离的增大，速度功率谱(PSD)曲线呈现峰值向低频移动的现象。
With increasing longitudinal distance, the velocity Power Spectral Density (PSD) peak shifted to lower frequencies.
随着流向距离的增大，速度功率谱(PSD)曲线呈现峰值向低频移动的现象。
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