Generally, disturbance decoupling requires the controlled system should satisfy some certain geometric conditions, which are too restricted for many practical systems.

要达到干扰解耦，一般要求系统满足一定的几何条件。然而这类几何条件对于许多实际系统来说过于苛刻，难以满足。

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For many users of WebSphere MQ whose networks include a mix of platforms, such as Windows, UNIX, and mainframe systems, this is simply not practical.

对于许多WebSphere MQ用户，他们所使用的网络包括各种平台的混合，如Windows、UNIX和大型机系统，这样做并不是很实际。

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But in many situations, pairwise testing is used to reduce the cost of test and is proven to be practical and effective for many software systems.

但是，在许多情况下两两测试可用于减少测试的成本，并对于许多软件系统在实践中证明是实用和有效的。

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