冰洲石是方解石的一种存在形式，它可以把光线分成两束。

Iceland SPAR is a form of calcite that splits light into two beams.

从两束喷注的能量和动量可以推算出产生它们的粒子的质量。

From the energies and momenta of the two jets, researchers can infer the mass of the particle that produced them.

返回的两束光在分束器处汇合，产生由亮区和暗区组成的干涉图案，图案中，光波要么相互抵消要么相互增强。

The returning light beams merge together at the beam splitter and create an interference pattern of light and dark regions where the light waves either cancel out or reinforce each other.

小捆，小束小把，小束，如禾秆、头发和草等。

A small bunch or bundle, as of straw, hair, or grass.

在脉冲束流管道上安装有强流毫微秒脉冲化聚束装置。

A ns pulse beam device is installed at pulse beam current piping.