那里，有一个可以方便髂胫束滑动和腿部动作的滑囊。

There should be a bursa here, which makes it easy for the iliotibial band to slide and the leg to move easily.

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从统一工作模式可以分解出条带扫描模式、聚束模式、滑动聚束模式和光束扫描模式，及其相应的简化二维数据收集方程。

The unified mode can be decomposed into strip-map mode, spotlight mode, sliding spotlight mode and beam scanning mode, and each correspondingly has a simplified 2-d data collection equation.

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