threshold energy中文什么意思

底限能；低限能

门限能量

阈能

• threshold:    n. 1.门槛；入口，门口。 2.【 ...
• energy:    n. 1.干劲，活力。 2.(语言、 ...
• energy threshold:    能阀; 能量阀; 能阈

例句与用法

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1. If the incident proton collides with a proton bound in a nucleus, the threshold energy is lower because the target proton is bound .
   如果入射质子是与束缚在原子核内的质子相碰撞，那么阈能会低一些，因为作为靶的质子是束缚着的。
2. It was found that the simple triangular shape distribution would cause " two - peaked " energy distribution near the threshold energy , which must affect the group transfer matrix
   阈能处三角形能谱分布的近似描述，导致产生了群散射矩阵的“双峰”现象，而阈能处矩形能谱分布使平均次级中子能量(
3. The relative momentum of two final particles and the cross section are zero at the threshold energy for an endothermic reaction , while the relative momentum of two initial particles is zero and the cross section at the threshold energy for an exothermic reaction is infinite
   在吸热反应的阈能处，出射粒子的相对动量以及截面均为零。在放热反应的阈能处，入射粒子的相对动量为零，截面趋于无穷大。由于强子的动量仅提供如此低的质心系能量，强子物质中x 。
4. We also experimentally observed the effect of sodium atom - molecular collisions and sodium atom - atom collisions on the line - shape and intensity of fluorescence spectra . in addition , the optically pumped infrared stimulated emission and energy transfer up - conversion process are observed in pr3 + : y2sio5 , and with the threshold energy , temperature dependence and divergence angle for the stimulated radiation are measured
   此外还研究了掺杂在固体y _ 2sio _ 5中的pr ~ ( 3 + )的光泵红外受激辐射和能量转移上转换，分别测得了红外受激辐射的阈值能量和发散角，并拟合得出了能量转移速率。

百科释义

In particle physics, the threshold energy for production of a particle is the minimum kinetic energy a pair of traveling particles must have when they collide. The threshold energy is always greater than or equal to the rest energy of the desired particle.