As an added bonus, an "x" particle could solve another perplexing cosmological mystery: why is there more matter than antimatter in the universe?

额外的收获是，“X”粒子还能解决另一个困扰已久的宇宙谜题：为什么宇宙中物质多于反物质？

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As an added bonus, an "x" particle could solve another perplexing cosmological mystery: why is there more matter than antimatter in the universe? (It's known as "baryon asymmetry" among physicists.)

额外的收获是，“X”粒子还能解决另一个困扰已久的宇宙谜题：为什么宇宙中物质多于反物质？(物理学家称之为“重子不对称”。)

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Meanwhile, the anti-X particle decays either to an antineutron or to two "hidden" antiparticles: anti-Y and anti-theta.

同时，一个反“X”粒子要么衰变成一个反中子，要么衰变成两个未知的粒子：反“Y”粒子和反“θ”粒子。

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Some of their work involved X-rays produced by particle accelerators, devices that bring atomic particles into high energies.

VOA: special.2009.12.08

Then, I gave you one other very important example of a particle moving in the x-y plane.

下面我再拿一个重要的例子,质点在 x-y 平面内的运动

耶鲁公开课 - 基础物理课程节选

There is no way that you could irradiate a crystal of nickel with a single beam of x-rays and get that circular ring pattern if the electron beam were behaving as a particle beam only.

没有什么其他的途径,可以让镍晶体发射,单束X光来,继而得到环状图案,如果电子束,是以粒子束形式出现的。

麻省理工公开课 - 固态化学导论课程节选

Both use vast particle accelerators to speed up electrons, which spray out X-rays as they pass around the accelerators.

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