One signature of positron-electronannihilation is gamma rays carrying 511 thousand electron-volts (keV) of energy.
电子-正电子湮灭的一个信号就是携带511keV能量的伽玛射线。
2
The new collider has to provide exact measurements of electron-positronannihilation.
新型的对撞机必须提供电子-正电子湮灭的准确测量结果。
3
One way to create such short bursts of gamma rays is through the collision — and subsequent annihilation, as the mass of those particles converts into energy — of an electron and a positron.