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 JFace API wraps the standard (non-trivial) widget, such as table and tree, and implements the structured content providers and label providers.
旋转锻压机本体是机床重要的基础部件，本体结构的强度和刚度直接影响到整个机床的性能。
Spin-forging press machines body structure is a very important basic part, whose strength and stiffness influence the performance of the whole machine directly.
钢轨是轨道结构的重要部件，是高速铁路重要的基础设施。
Steel rail is an important component of track structure, and is also the primary infrastructure of high speed railway.
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