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.
动量守恒方程包括两种气体(热气体和束电子)的动量转移。
The momentum flux conservation equation includes the momentum transfer of two gases (heating gas and beam electron).
交易员用价格交叉来鉴别动量转移并作为一个基本的进入和退出策略。
Price crossovers are used by traders to identify shifts in momentum and can be used as a basic entry or exit strategy.
我们的结论指出介子的中心处的横向电荷密度分布与介子大动量转移处的形状因子有关，我们给出了一个一般性的结论。
We conclude that the horizontal center of meson charge density distribution is related to the form factor at large momentum transfer. We give a general conclusion.
光的吸收可以同时导致光束的自旋角动量或轨道角动量转移给微米粒子，就像光学镊子一样引起粒子的转动，从而形成光学扳手。
Absorption of the light allows both the spin and orbital angular momentum of a light beam to be transferred to microscopic particles held within optical tweezers, forming an optical spanner.
动量被认为是“守恒的”，也就是说，动量一旦被建立，就一定会转移到其他地方。
Momentum is said to be "conserved", that is, once you build it up, it has to go somewhere.
许多年前，在“动量，热量和物质转移”考试中，就有下面这一道题。
In May a few years ago, the "Momentum, Heat and Mass Transfer" exam paper contained the question.
测量中子在生物样品上的动量和能量转移，可以得到动力学结构因子。
By measuring the scattered neutron intensity versus momenta and energy transfers, the structure and dynamical information of the biological macromolecules can be obtained.
角动量的向量特性，进动，角动量守恒(它在系统内部之间的转移)，章动。
Vector nature of angular momentum, precession, conservation of vector angular momentum (its transfer between parts of a system), nutation.
角动量的向量特性，进动，角动量守恒(它在系统内部之间的转移)，章动。
Vector nature of angular momentum, precession, conservation of vector angular momentum (its transfer between parts of a system), nutation.
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