It helps the platform owner and raises a barrier to competitors.

这种网络效应能够增强平台所有者的实力，提高对手的竞争门槛。

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While this is easy to encapsulate, it's still a portability barrier because it requires you to rewrite your lookup and calling code, effectively tying your application to the JBoss platform.

虽然这样的代码易于封装，但是在可移植性上仍然存在障碍，因为它需要重新编写查找和调用代码，这实际上将应用程序捆绑到了JBoss平台上。

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The iPhone is seen as an interesting new platform because it breaks the barrier between the PC-centric Web and the mobiles as we have known them.

iPhone被看作一种有趣的新平台，因为它突破了以PC为核心的互联网和我们熟知的手机的界限。

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Those include a pilot program to test the use of platform barrier doors on the L subway line, and a vow to explore the installation of an automated warning system that would alert train controllers when a person is on the tracks.

WSJ: New York Subway Deaths Remain Rare

With our SiRFstarV architecture and SiRFusion platform, we are breaking the barrier to providing a seamless location and navigation experience to consumers, both indoors and outdoors.

ENGADGET: CSR sharpens indoor and in-car navigation with SiRFstarV, SiRFusion and SiRFprimaII

Mr Gates believed this could weaken the applications barrier to entry by usurping Windows as the main platform for software developers.

ECONOMIST: Busted | The