These units of energy are photons or quanta.这种能量单位称为光子或量子.With good light collection, about 30 % of the luminescence quanta may reach the photocathode.在良好的光收集条件下, 约30%的荧光量子可以到达光阴极.The basic dynamic variables are then the...
They have no wish for any change in the status quo.他们不想改变现状。I just wanted to wish you a merry Christmas.我只想祝福你圣诞快乐。The world is not always what we wish it to be.世界并不总是如我们所愿。...
There was a stampede for the exit.大家都争先恐后地朝出口涌去。A stampede broke out when the doors opened.门一开,人们蜂拥而出。There was a stampede of panic - stricken crowd from the burning hotel.一群惊惶失措的人们,从失火的旅馆中跑了出来....