查询词典 propagation

Attribute data ; uncertainty ; error propagation

属性数据；不确定性；误差传播

Propagation properties of high-order Bessel-Gaussian beam through a misaligned first-order ABCD system have been studied by using the generalized Huygens-Fresnel diffraction integral and augmented matrix .

使用广义惠更斯-菲涅耳衍射积分和增广矩阵，研究了Bessel-Gaussian光束通过失调一阶ABCD系统的传输特性。

Methanol ; Diesel Fuel ; Combustion ; Optical Measurement ; Optical Radiation ; Autoignition ; Flame Propagation ; Diesel Engine

甲醇；柴油；燃烧；光学测量；光辐射；自燃；火焰传播；柴油机

To establish a new technique for in vitro rapid propagation and conservation of germplasm of autotetraploid plant of Plalycodon grandiflorum, basal MS medium supplemented with different hormones was filtrated and optimized by using uniform design and orthogonal design.

为了建立优良同源四倍体桔梗的快速繁殖和离体保存技术，采用均匀设计和正交设计以添加不同激素的MS培养基为基本培养基进行筛选和优化。

The auxiliary differential equation of wave propagation in multiple Lorentz-dispersive and nonlinear media is derived. After the study of the optical pulse propagating in silica optical fiber, the best electric intensities for this material with different length are obtained.

论文中推导了在具有多个洛伦兹色散的非线性媒质中的辅助差分方程，探讨了在石英光纤中光脉冲的传输性质和现象，并得到了在这种媒质中经过不同距离出现光孤子效应时最佳的波源场强值。

Although the Preissman scheme of KP equation is multisymplectic, it took too efforts to realize, Hence we elimate the auxiliary variable by a trivial computation and obtained the multisymplectic forty-five points scheme of KP equation. And then, we test this forty-five points scheme on soliton and solitary waves over long time intervals, the numerical results shows the propagation and interact of soliton and solitary waves.

但是在实际的数值实验中，由于需要计算共轭动量的值，Preissman格式需要占用的计算内存比较大，计算时间比较长，因此我们在数值格式中消去共轭动量，最后得到与多辛Preissman格式等价的一个多辛45点格式，我们用这个格式进行了数值实验，数值实验结果很好地显示了孤立子和孤立波的传播与碰撞。

The average propagation velocity of the laser-induced shock wave in aluminum is 6.38×10 3m/s.

激光引发的冲击波峰值压力在铝中的衰减规律是指数型的。

The average propagation velocity of the laser-induced shock wave in stainless steel was 5.72×10^3m/s.

激光冲击波在不锈钢材料中的平均传播速度为5.72×10^3m/s，与声波纵波的传播速度一致。

The wave propagation along axis direction in piezoelectric hollow cylinder is studied.

对压电圆柱壳体内波的轴向传播进行了研究。

And third, in fractured medium with a tilted axis of symmetry , the elastic parameters and the phase velocities of waves in this medium are gained for analyzing the law of wave propagation.

倾斜裂隙介质，分析了该类介质的弹性参数，模拟了三类波的相速度面，分析了波的传播规律。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失