拍照提示：捕捉带景观的人物远远比单纯漂亮的山景更有趣。
Photo Tip: Capturing people engaged with the landscape is far more interesting than generic pretty mountain scenery.
采用简化的方法确定锁相回路的极限环频率极限，推导出捕捉带的一般表达式；
The simplified method has been adopted to confirm the limit frequency of limit circle of phase-lock control loop. The general expression of the capture band has been derived.
采用简化的方法确定锁相回路的极限环频率极限，推导出捕捉带的一般表达式；
The simplified method has been adopted to confirm the limit frequency of limit circle of phase-lock control loop. The general expression of the capture band has been derived.
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