评述了光抽运和自旋交换碰撞中角动量转移和损失的物理。
This article reviews the physics of angular momentum transfer and loss in optical pumping and spin-exchanging collisions.
最后，提出了因自旋交换碰撞和自旋销毁碰撞引起的极化原子的自旋弛豫。
Finally, spin relaxation of polarized atom due to spin-exchange collisions and spin-destruction collisions is put forward.
当离子在鞘层运动时，考虑离子与中性原子之间的电荷交换和弹性碰撞，以及离子被尘粒的库仑散射和收集作用。
The charge exchange and elastic collision between ion and neutral atoms and the collection and Coulomb scattering of ion on dust grains are considered.
其中采用了电子与离子系统的LS耦合表象，考虑了交换效应，仔细处理了碰撞矩阵元的角部分因子。
The LS coupling representation of electron -ion system is used, the exchange effect is taken into account and the angular factors of collision matrix elements are treated in detail.
由于两个碰撞粒子之间没有量子数的交换，因此该过程是一个单纯的绕射过程。
The process is a purely diffractive process since no quantum numbers exchange between the two colliding particles.
给出了碰撞分子各自由度间的能量交换模式及各类化学反应的选择模式。
It has got energy transfer models among molecular degrees in collisions and chemical reactions selection models.
时隙aloha是无线射频识别系统中常用的抗碰撞算法，采用时分复用的方式，标签在指定的时隙内与阅读器进行数据交换。
Slotted ALOHA is commonly used protocol in anti-collision of RFID system. It USES TDMA mode to exchange their data. Tags can only translate its information in a slot.
本文运用基于颗粒动理学理论的欧拉-欧拉气固多相流模型，考虑颗粒自旋转流动对颗粒碰撞能量交换和耗散的影响，数值模拟流化床内气体颗粒两相流动特性。
Numerical analyses of effect of particle rotation on gas and particles flow behavior were performed using two-fluid flow model combining with the kinetic theory of granular flow.
使用交换机作为星形耦合器能够碰撞有所减少。
The use of switches as star couplers enables collisions to be reduced.
使用交换机作为星形耦合器能够碰撞有所减少。
The use of switches as star couplers enables collisions to be reduced.
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