用友 U9-UBF应用开发手册,对使用用友u9平台的特别有用。-UF U9-UBF application development manual on the use of UF u9 platform particularly useful.

车和船的总质量，定义一个船类和车类，使之求出车和船的总质量，用友元函数-The total mass of the car and boat, define a Boat and vehicle classes, so obtaining the total mass of the car and boat UF metafunction

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