1) spin-lattice relaxation
旋转格子松弛
2) spin-lattice relaxation time
旋转格子松弛时间
3) spin-lattice relaxation rate
旋转格整松弛速度
4) exciton rotational relaxation
激子旋转弛豫
1.
Effect of exciton rotational relaxation on luminescence decay of low-doped porphyrin side-chain polymers;
激子旋转弛豫对低掺杂卟啉侧链聚合物荧光衰变过程的影响
5) relaxation scheme
松弛格式
1.
Numerical solution of the two-dimensional shallow water equations by high order relaxation scheme;
二维浅水方程的高阶松弛格式求解
2.
A fifth order relaxation scheme for hyperbolic conservation laws;
求解双曲型守恒律的五阶松弛格式
3.
A fifth-order relaxation scheme is presented for the approximate solution of two-dimensional hyperbolic conservation laws, where the fifth-order weighted essentially nonoscillatory(WENO) reconstruction is adopted for spatial discretization and the implicit explicit Runge-Kutta method is chosen for the time discretization of relaxation system.
松弛格式是Jin和Xin提出的无振荡有限差分方法,其主要思想是将守恒律转化为松弛方程组进行求解。
6) relaxation factor
松弛因子
1.
A practical algorithm determining the optimal relaxation factor of SOR iterative methods;
确定SOR最佳松弛因子的一个实用算法
2.
The effect of the relaxation factor on the convergence and the calculation efficiency in the one step forming simulation approach was studied through a series of the practical examples.
通过一系列算例,着重研究了一步成形模拟方法中松弛因子对收敛性和计算效率的影响,提出了一种基本上可以同时兼顾计算效率和收敛性两方面要求的松弛因子选取算法,并且在此基础上设计编制了计算程序。
3.
Using adaptive calculation method, the relaxation factor ω is changed according to increasing or decreasing of the number of iteration within the range from 0 to 2, thus dynamic adjustment of ω can be obtained.
在模拟铝合金压铸件型腔充型过程时 ,采用传统的固定松弛因子ω(0 <ω <2 )不能有效地减少运算中的迭代次数 ,而采用一种提高充型过程数值模拟运算速度的新算法—动态超松弛迭代算法 ,在 0 <ω <2范围内 ,运用自适应计算方法 ,根据运算的迭代次数的增减可以决定松驰因子的增大或减少 ,动态调整松弛因子可使运算中的迭代次数减少。
补充资料:“质子-电子偶极-偶极”质子弛豫增强
“质子-电子偶极-偶极”质子弛豫增强
物理学术语。原子核外层中不成对的电子质量小,但磁动性很强,可使局部磁场波动增强,促使氢质子弛豫加快,从而使T1和T2缩短,这种效应即为PEDDPRE。过渡元素和镧系元素大部分在d和f轨道有多个不成对电子,所以其离子往往具有PEDDPRE,可用来作顺磁性对比剂,如钆(Gd)。Gd在外层有7个不成对电子,具有很强的顺磁性。
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