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NB 英 [ˌen'bi:] 　美 [ˌen'bi]

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NB

abbr. 窄频带（Narrow-Band）；内布拉斯加州（Nebraska）；新布伦瑞克省（New Brunswick）；北不列颠（North Britain）；向北行进的（northbound）　

名词复数:nbs　

That is, now we have to divide by NA factorial times NB factorial.　就是说，现在我们要除以NA的阶乘乘以NB的阶乘的积。

Thompson and Dennis Ritchie, also of Bell Labs, improved B and called it NB.　汤普逊和丹尼斯·里奇（也是贝尔实验室的）改进了B，起名叫 NB 。

abbr. 窄频带（Narrow-Band）；内布拉斯加州（Nebraska）；新布伦瑞克省（New Brunswick）；北不列颠（North Britain）；向北行进的（northbound）

1. That is, now we have to divide by NA factorial times NB factorial.

就是说，现在我们要除以NA的阶乘乘以NB的阶乘的积。
2. Thompson and Dennis Ritchie, also of Bell Labs, improved B and called it NB.

汤普逊和丹尼斯·里奇（也是贝尔实验室的）改进了B，起名叫 NB 。
3. Most of UNIX was then rewritten in NB and then C, which led to a more portable operating system.

UNIX的大部分然后都被用NB重写，然后又用C重写，这就产生了一个更具移植性的操作系统。