Create two UML classes, DrawingSurface and GraphicException, to be used as a parameter type and exception type, respectively, for the sample method.

创建两个uml类，DrawingSurface和GraphicException，分别用做示例方法的参数类型和异常类型。

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If the execute method is invoked twice on an interaction, this will invoke two corresponding ECI calls to CICS. This is illustrated in the following code sample.

如果在一个交互中两次调用execute方法，这样会调用两个相应的到CICS的ECI调用。

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Method By the device of VSOS, the sample was injected into two difference polar capillary columns, and entered into two selected detectors after separated.

方法样品进样后通过VSOS装置进入两根不同极性的毛细管柱，经分离后到达两个不同选择性的检测器。

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