VB模块中定义的结构在VB类中无法识别

Question

我在Module Telephony中定义了名为USIM_DEF的结构。

模块电话位于文件common.vb中 来自函数F1的另一个文件BatteryTests.vb我调用在Public Class BaseStation中的文件BaseStationClass.vb中定义的函数F2。 函数F2具有结构USIM_DEF的参数之一。我得到的错误是：

＆＃39; USIM_DEF_elem＆＃39;无法公开类型＆＃39; Telephony.USIM_DEF＆＃39;在课程之外通过课程＆＃39; BaseStation＆＃39;。 C：\ Git \ Power_Automation \ Power_Automation \ bin \ tests \ tests \ BaseStationClass.vb 106 48次测试

这是我的代码请帮助：

文件common.vb

Module Telephony

    Public Structure USIM_DEF
        Public SimIndex As USIM_ind
        Public Rat As CELL_RAT
        Public PlmnNum As PlmnNumberParts
    End Structure

文件BatteryTests.vb

Module BatteryTests
    Sub Prepare_UE(.,.,.,.,.,)
        'I call function that defined in file
    End Sub

File BaseStationClass.vb

Public Class BaseStation
    Overridable Function SetMNC(ByVal device As GPIB,
                        ByVal USIM_DEF_elem As USIM_DEF,  //compile ERROR  
                        Optional ByVal container As TestContainer = Nothing,
                        Optional ByVal timeout As Integer = 1000) As Boolean
        Return False
    End Function

    Overrides Function SetMNC(ByVal device As GPIB,
                        ByVal USIM_DEF_elem As USIM_DEF,  // compile ERROR                                                       
                        Optional ByVal container As TestContainer = Nothing,
                        Optional ByVal timeout As Integer = 1000) As Boolean
        ' .......
        ' ......
        ' ......
        Return True
    End Function
End Class

出了什么问题 为什么我不能在Public Class中调用Module ????

中定义的结构类型的参数

非常感谢 Ilana