propagation distance

The results show an apparent decay in the Hugoniot elastic limit with increasing propagation distance, as well as a stress relaxation behind the elastic wave front, and nearly 44% loss of Hugoniot elastic limit was observed in the present sample thickness range.

实验结果显示：Hugoniot弹性极限随着传播距离呈指数衰减，在所研究的样品厚度范围内，Hugoniot弹性极限减小了44%；

The idiographic behave is that after certain distance propagation, the signal strength of sky wave will exceed the strength of ground wave apparently, it makes the receiver lock on the sky wave by error and the positioning result will deviate from the actual position.

其具体表现为：在传播一定距离后，天波信号强度远大于地波，导致接收机错误的锁定在天波上，使系统解算结果偏离实际载体位置。

Focus Characteristics of Laser Beam for Long Distance Propagation in Atmosphere

激光束在大气中长距离传输聚焦特性的研究

For a given input power, the cutoff spatial frequency, the fastest growing frequency and the maximum perturbation growth, in an amplifying medium, increase with the increase of the gain of the medium and propagation distance.

主要是在一定的输入功率下，小尺度调制增长的临界频率、最快增长频率及其对应的最大增益（B积分）均随介质增益或传输距离的增大而增大；

By properly selecting initial value of calculating parameters, the shock wave propagation at the distance range out of 5 times of charge radius is accurately deduced.

适当选取起算参数，在5倍装药半径以外的爆炸远场范围计算精度良好。

The error of missile speed was deduced by the distance error. The distance error was obtained by a microwave radiometer directly detecting the atmospheric radiation brightness temperature on the path of radio wave propagation.

其速度（距离变化率）误差是利用与距离误差△R之间的关系得到，而△R由微波辐射计在电波传播路径上直接测量大气辐射亮度温度得到。

The time delay and pulse width also depend on propagation distance.

脉冲时间延迟和脉冲宽度还随传输距离发生变化。

Variations of steady state thermal blooming with laser power and propagation distance are introduced and power threshold is also calculated.

得出了一定条件下，热晕随激光输入功率和传播距离的稳态变化规律，并计算了激光在大气中传输10km时发生热晕的功率阈值。

It is shown that intensity distribution of apertured off-axes Gaussian beam depends on the Fresnel number, truncation parameter, relative propagation distance, relative excursion and obliquity of the beam.

研究表明：受光阑限制离轴高斯光束的光强分布与菲涅耳数、截断参数、相对传输距离、光束的相对偏移和倾角有关。

Finally, through the double spark plugs study found that the double spark plug can shorten the flame propagation distance, reduce deflagration tendency and can improve the burn rate effectively. So we can increase the compression ratio to improve the combustion efficiency.

最后通过双火花塞研究发现，双火花塞点火可以缩短火焰传播距离，减小爆燃倾向，有效的提高燃烧速率，因此可以通过适当增大压缩比的方式来提高效率。

And the analysis of the test data is as following: ① Influence of concentration impacting on peak pressure is analyzed. And peak pressure has a cubic function with propagation distance with same test point distance.

分析试验数据认为：①浓度的改变对压力峰值的影响是比较大的，当测点距离一定时，压力峰值与浓度成二次函数关系。

In this paper, the effect of atomospheric turbulence on laser beam propagation between tops of the high-building and the hill behind our university campus at the distance of 1500m is discussed.

本文讨论了在高楼顶与校园后山头间1500m距离上，大气湍流对激光束传输的影响。