当粒子或其他东西，通过辐射或粒子的方式，并且能量高于临界值，撞击到硫化锌的表面上的时候，就会发光。
And, when zinc sulfide is hit by particles or by anything, by radiation or by particles of greater than a certain critical energy, there is a glow.
给出了当初始能量小于“临界值”时方程解的生命跨度的上界估计。
And the super estimate of this lifespan is given when the initial energy of this equation is less than "critical value".
当激光能量密度低于某一临界值时，点火延迟时间随激光能量密度的提高而线性变短，然而激光能量密度超过该临界值后，激光点火延迟时间保持恒定。
The delay time of ignition is shorted with the rise of the energy density of laser linearly, but when the energy density increases over a critical value, the delay time keeps constant.
当激光能量密度低于某一临界值时，点火延迟时间随激光能量密度的提高而线性变短，然而激光能量密度超过该临界值后，激光点火延迟时间保持恒定。
The delay time of ignition is shorted with the rise of the energy density of laser linearly, but when the energy density increases over a critical value, the delay time keeps constant.
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