The reasons of the secular decrease may be caused by the mass transfer between the two components or/and angular momentum loss from the system.
轨道周期减小可能是因为物质由主子星转移到次子星或系统角动量损失所至,而周期性的变化可能是由系统子星间的磁活动周或第三天体的光时效应引起。
参考来源 - 近相接型密近双星的观测研究The angular momentum distributions and their propagation evaluation characteristics of optical vortices,especially vortices with the complicated topological structure,which are difficult to measure accurately through an experiment,can be obtained by numerical computation.
对于光学涡旋特别是具有复杂拓扑结构的光学涡旋,可以通过数值计算的方法获得实验上难以准确测量的角动量分布及其传输演化特性。
参考来源 - 光学涡旋横向线动量密度的传输演化特性·2,447,543篇论文数据,部分数据来源于NoteExpress
以上来源于: WordNet
N a property of a mass or system of masses turning about some fixed point; it is conserved in the absence of the action of external forces 角动量
For example, no matter how much a dancer wishes to leap off the floor and then start turning, the law of conservation of angular momentum absolutely prevents such a movement.
例如,无论一个舞者多么想要跳离地板,然后开始旋转,角动量守恒定律绝对阻止这样的动作。
有了旋转的角动量。
That's a spin angular momentum.
那是旋转的角动量。
Bohr expressed the quantum condition by the angular momentum, quantum condition in the following manner.
波尔阐明了他的量子理条件,通过角动量,和以下的量子条件进行量子化。
Bohr said that the angular momentum, mvr where n is this integer counter h over 2 pi.
波尔提及到角动量,是被量化了的,mvr,is,quantized,这里的n等于一个整数乘以h除以2π
It describes the angular momentum of the electron.
它描述的是,电子的叫角动量。
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