起点低,然后增加。
You know the old story was start low go slow and you may not ever reach appropriate targets.
我们知道,以前的说法是小剂量开始且缓慢加量,但可能从未达到合适的目标。
She will start with a low one-inch heel and build up to a towering five inches by the age of 23, as she teeters into womanhood.
随着她从女孩变成女人,她将从1英寸的低跟开始,到23岁时逐渐增加到5英寸的高跟。
" ...such as relatively low levels of malaria risk to start with, political stability, a good health system and low levels of population movement bringing in infections from elsewhere."
VOA: special.2010.11.03
Absorption is just the opposite of emission, so instead of starting at a high energy level and dropping down, when we absorb light we start low and we absorb energy to bring ourselves up to an n final that's higher.
吸收就是发射的逆过程,与从一个高能量到低能量不同,当吸收光时,我们从低能量开始,吸收能量到一个更高的能量。
we start high and go low, we're dealing with emission where we have excess energy that the electron's giving off, and that energy is going to be equal the energy of the photon that is released and, of course, through our equations we know how to get from energy to frequency or to wavelength of the photon.
当我们从高到低时,我们说的,是发射,电子有多余的能量给出,这个能量等于,发出,光子的能量,当然我们可以通过方程,从能量知道,光子的频率,和波长。
应用推荐