Individual particles in a TGF acquire a huge amount of energy, sometimes in excess of 20 mega-electron volts (MeV).

单个的粒子可以在一次伽马射线闪光中获得巨大能量，有时会超出二十兆电子伏特(MeV)。

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But the fact that the excess bariums are responsible for electron emission may be reconciled with the deficiency of alkaline earth metals during life by the dynamical surface emission center model.

然而超额钡仍然是发射电子的泉源，可以通过动态表面发射中心模型而与寿命中碱土金属下降统一起来。

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UV is an electromagnetic wave, the electron atoms jump from the high-energy bands at low energy band, will release excess energy in electromagnetic waves.

紫外线是电磁波的一种，原子中的电子从高能阶跳到低能阶时，会把多余能量以电磁波释出。

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we start high and go low, we're dealing with emission where we have excess energy that the electron's giving off, and that energy is going to be equal the energy of the photon that is released and, of course, through our equations we know how to get from energy to frequency or to wavelength of the photon.

当我们从高到低时，我们说的,是发射,电子有多余的能量给出，这个能量等于，发出,光子的能量，当然我们可以通过方程,从能量知道，光子的频率，和波长。

麻省理工公开课 - 化学原理课程节选

It was the first machine to smash particles together with energies in excess of 1 trillion electron-volts or 1 TeV, whence its name.

ECONOMIST: The future of physics (1)