Meanwhile, the anti-Xparticle 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。
2
In recent years, scientists have been scaling up the power of the X-ray, using massive particle accelerators or synchrotrons to deliver much larger radiation doses.