从扫描雷达每次扫描中获得位置数据或者从轮流传输数据的通道获取信息，很自然地就得到可离散变量。
Discrete variables occur naturally, as from a scanning radar that obtains position data once per scan or a data channel that transmits many pieces of information in turn.
从扫描雷达每次扫描中获得位置数据或者从轮流传输数据的通道获取信息，很自然地就得到可离散变量。
Discrete variables occur naturally, as from a scanning radar that obtains position data once per scan or a data channel that transmits many pieces of information in turn.
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