Many specifications are involved with PCI bus and interface explanation is complicated, so its difficult to develop the stable PCI bus equipment of high performance.

PCI总线涉及的规范比较多，接口说明复杂，开发出高效、稳定的PCI总线设备具有一定难度。

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The short explanation for this is that the user interface provides a view of the system from the system perspective.

这种说法的一个简单解释是，用户接口提供一个系统透视图的系统概貌。

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The method getString("value") is part of the SDO dynamic interface and needs a bit of an explanation.

方法 getString("value") 是 SDO 动态接口的组成部分，需要对其进行一点说明。

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