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1)  Inverse scattering
反散射
1.
The linear sampling method for the inverse scattering problem of acoustic waves is based on the fact that: a linear integral equation of first kind-far field equation including a parameter has an unbounded solution as the parameter approaches the scattering boundary from inside.
本文在此基础上就Dirichlet边界条件的声波反散射问题,利用积分方程理论严格证明了线性抽样方法对其的可用性,具体数值例子表明该方法是有效的。
2.
Broadly speaking, the direct scattering problem is to determine scattered wave and its asymptotic behavior from a knowledge of the incident wave and the differential equation governing the wave motion; The inverse scattering problem is to determine the shape of the scatterers or some other physical index from a knowledge of the scattered wave or its the asymptotic behavior.
障碍物反散射问题的研究在雷达探测、地质勘探、声纳定位、无损探测以及医学成像等领域有着重要的应用,而腔体散射与反散射问题在军事领域也有着很重要的研究背景。
2)  backscatter
反散射
1.
Through feasibility studies of determination to coal ash share with backscattering energy spectrum method,the recent test scheme is raised.
通过对利用反散射能谱法测定煤灰份的可行性研究,提出了全新的测试方案,研制了先进的 H C Y- 1 煤灰份测定
3)  Back-scattering
反散射
1.
Study on improving sensitivity of back-scattering measurement;
提高反散射测量方法灵敏度的研究
4)  inverse acoustic scattering
反散射
1.
The inverse acoustic scattering of sound-hard obstacle in three dimensional shallow ocean with free surface and rigid bottom is investigated.
研究三维浅海硬障碍物声波的反散射问题,其中假设浅海海面是自由释放边界,海底是绝对硬的,障碍物边界也是绝对硬的。
2.
The inverse acoustic scattering of sound-hard obstacle in three dimensional shallow ocean with free surface and rigid bottom is studied.
研究三维浅海硬障碍物声波的反散射问题 ,其中假设浅海海面是自由释放边界 ,海底是绝对硬的 ,障碍物边界也是绝对硬的 。
5)  Reflcctivc and scatter
散射反射
6)  reactive scattering
反应散射
1.
Experimental results show that both inelastic and reactive scattering are significant, and that nuclear spin is conserved in the former process.
实验研究表明,在高里德伯态氢原子与D2的散射中,非弹性散射和化学反应散射都是重要的。
2.
According to the method suggested by Alhassid-Levine,the Dynamical Lie Algebras Afor the reactive scattering system H+H_2(α)→H+H_2(β)are found.
利用李代数方法构造反应散射系统H+H_2(α)→H+H_2(β)的动力学代数A。
补充资料:反常散射
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性质: 对于入射X射线波长接近或低于原子吸收边的场合,原子中的电子将偏离自由电子模型而呈束缚态,原子对X射线则偏离正常的(汤姆逊)散射而呈现反常散射。对于反常散射,原子的散射因子需作校正,即有,式中f0。是略去反常散射时的正常散射的f值,第二、三项分别是校正项的实部与虚部。式中三项均与X射线波长相关,当原子的某一吸收边与X射线波长相近时,△f′,与△f″值最大。晶体学中可利用反常散射效应进行晶体绝对构型测定及生物大分子结构分析(如多波长反常衍射法)。

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