首先，本文对波束形成的基本概念作了概述，讨论了几种常用的波束形成法——基本波束形成法、零向波束形成法以及优化波束形成法。

Firstly, the basic conception of the formation of the beam is summarized, and also discuss some usual formation of beam-basic formation of beam, zero - point of beam and optimized formation of beam.

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我们批发给几家向公众零售的连锁店。

We sell wholesale to several chains that sell retail to the public.

《柯林斯英汉双解大词典》

向未成年人销售烟草制品的零售商要被强制罚款。

Fines are imposed on retailers who sell tobacco to minors.

《柯林斯英汉双解大词典》

You can start from one nucleus and go to the next nucleus, and there are no zero planes, no nodes, nothing.

你可以从一个核出发,看向另一个核，中间没有零平面，没有节点，什么也没有。

麻省理工公开课 - 固态化学导论课程节选

So, you remember from last time radial nodes are values of r at which the wave function and wave function squared are zero, so the difference is now we're just talking about the angular part of the wave function.

你们记得上次说径向节点在,波函数和波函数的平方,等于零的ｒ的处，现在的区别是我们讨论的是,角向波函数。

麻省理工公开课 - 化学原理课程节选