A.守恒B.統(tǒng)計(jì)上守恒C.部分守恒D.不守恒
A.受激輻射系數(shù)B.引力紅移C.自發(fā)輻射系數(shù)D.受激吸收系數(shù)
A.奇數(shù)B.整數(shù)C.半整數(shù)D.偶數(shù)