The JFace API wraps the standard (non-trivial) widget, such as table and tree, and implements the structured content providers and label providers.
JFace API 包装了标准（并非不重要的）部件，例如表和树，并实现了结构化内容提供者和标签提供者。
The traditional instrument recognition method adopts binary-tree classifying method. The process of this method is trivial and inaccurate.
传统的乐器识别方法采用的是树型分类方法，这种方法分类过程比较繁琐，而且精度不高。
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