建模语言也是厂商特有的，缺乏直观性。

The modeling language is a proprietary one, reducing intuitiveness.

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这就要求各个厂商在自己特有的网管管理系统中，提供面向上级网络管理系统的统一接口，即北向接口。

So the factories are asked to provide united interface called north bound interface which faces higher level network management system in their peculiar network management systems.

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一经经销商要求，厂商可允许经销商按厂商指示创建从其特有网站到厂商网站的链接。

The MANUFACTURER may, upon request of the DISTRIBUTOR, allow the DISTRIBUTOR to create a link from its website to the website of the MANUFACTURER according to the instructions of the MANUFACTURER.

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