This paper presents main technical parameters, structural composition, principle of work and industrial test of Model DYZ 220 charging car for the underground mine.

介绍dyz 220型地下装药车的主要技术参数、结构组成与工作原理及其工业试验。

youdao

That's it. Again, these other p dxy dyz - or the d x y, d y z, those are going to be those more complicated linear combinations, you don't need to worry about them.

同样，这些p轨道,或者，它们是一些,很复杂的线性组合，你们，不用管它。

麻省理工公开课 - 化学原理课程节选