And so we have a positive charge in the nucleus which is given by the number of protons.

在原子核上,有很多质子聚集而形成的正电荷。

麻省理工公开课 - 固态化学导论课程节选

And it is equal to the sum of the number of protons plus the number of neutrons.

它等于质子数,加上中子数。

麻省理工公开课 - 固态化学导论课程节选

The same number of electrons, but the number of protons keeps going up, up, up.

他们都是等电子，但是质子数在增加。

麻省理工公开课 - 固态化学导论课程节选

Z Number of protons in the nucleus, this is number of protons in the nucleus, which in the neutral atom is equal to the number of electrons.

质子数。，Z，proton，number。,原子核中的质子数，这是原子核的质子数，在中性原子中，等于,电子数。

麻省理工公开课 - 固态化学导论课程节选