GMLFeatureExtractor Constructs GML documents from the input features and stores them in the specified attribute for the features that are output by the GML port.是什么意思_GMLFeatureExtractor Constructs GML documents from the input features and stores them in the specified attribute for the features that are output by the GML port.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句