It is assumed that the emission and absorption of light energy by an atom or molecule is not a continuous precess but occurs in steps.
假定原子或分子发射光能和吸收光只能不是一个连续的过程,而是阶梯式发生的。
2
Because of the continuous decay, the quantity of radioactive material and the rate of emission of radiation decrease steadily.
由于连续衰变的结果,放射性物质的数量,辐射发射率都逐渐下降。
3
The composition of continuousemission monitoring system (CEMS) for fuel gas from stationary pollution sources is introduced, and the measurement methods are compared.