1.  directed
2.  beamed
3.  vectored

• 1. 定向的: directional | targeted | oriented | directive
• 2. 不定向的: non directional | astatic | unoriented
• 3. 反转定向的: orientation reversing

更多释义

• 1.我们需要仔细考虑定向的问题。
  OK, we have to think of it carefully about orientations.
  dict.yoduao.com
• 2.事实上，这就是所谓的确定曲面定向的过程。
  So, in fact, this is called choosing an orientation of a surface.
  dict.yoduao.com
• 3.所需的重定向的所有信息都为标头。
  All the information necessary for a redirect is in the headers.
  dict.yoduao.com

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