We use the same strategy of checking the resource extension as a trigger point, as shown below.

我们使用与触发点相同的资源扩展检查策略，如下所示。

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Since you want the user to be able to trigger the extension functionality, you'll provide them with a couple of toolbar buttons.

因为希望用户能够触发扩展功能，还需要提供两个工具栏按钮。

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PXI supplies firm industrial encapsulation, more instruments module extension slot and advanced capabilities of trigger, timing and side-band communication.

PXI提供坚固的工业封装、更多的仪器模块扩展槽以及高级触发、定时和边带通讯能力。

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