标长

等离子体密度标长对高次谐波转换效率的影响

Effect of Plasma Density Scale Length on the Conversion Efficiency of High Order Harmonic Generation in Laser-Plasma Interaction

在考虑位置固定和位置随机的情况下，我们分别得到了银盘的标长为和。

Under the consideration of fixed and random positions of open clusters , we derive the scale length of the Galactic disk to be and , respectively .

两种方差在铷原子频标长稳测量中的比较分析

Comparison of Two Variances in the Long Time Frequency Stability Measurement of R_b Atomic Frequency Standard

固定等离子体密度标长，取不同的激光入射角、电子初始温度，相对论效应对吸收系数的影响是一致的。

For a given scale_length , similar intensity_dependence of the absorption is found for different incident angles and different initial electron temperatures .

通过等离子体粒子模拟研究了在强激光与等离子体相互作用产生高次谐波的过程中，等离子体密度标长对转换效率的影响。

The effect of plasma density scale length on the conversion efficiency of high order harmonic generation in the interaction of intense laser and plasma was investigated via PIC ( particle in cell ) simulation .

由于元素扩散的时标非常长，所以对于比太阳更年老的恒星，扩散的效应更加明显和有效。

Because of the long time scale , the effects of diffusion are more obvious and efficient for the older main sequence stars than the age of the Sun .

然而，由于我国很多现行的爆破器材检测标准很难被国外认可，且标龄比较长，标准系统性不强。

However , unfortunately it is hard for many existing blasting equipment inspection standards to be accepted , and what is more is that there is a lack of system for these standards .

然而，现在的大部分军事标图仍处于手工或半自动作业状态，标绘周期长，难以有效地修改和传输，同时标绘人员劳动强度较大。

However , now most of the military plotting is made by hand or semi-automatic operation in a long cycle , difficult to be effectively modified and transferred , and takes a greater labor intensity .

绝缘电阻表以前是按标度尺弧长定义的弧长误差，现行国家标准规定以指示值的百分数表示。

Formerly the arc length error for the insulation resistance instrument is defined by scale arc length . At present national standard determines that the percentage of indicated value expresses it .