俘获比（capture ratio） 为接收调谐器的技术指标。指在调谐器锁定一个信号较强的电台而抑止一个信号弱些的电台之前，所需的两个电台信号强度之差的分贝值。俘获比越低，调谐器的性能便越好。
推导了俘获比的一般计算公式，借助于计算机辅助计算，得到了俘获比曲线及一些典型情况下的俘获比。
The general formula of capture ratio are derived in this paper, and the capture ratio curves and the capture ratio in some typical cases are obtained with the help of computer assistance computation.
使用基于用例来俘获功能需求改进生产力百分比的保守估计，我们估计能够得到14%的生产力改进。
Using conservative percentages for productivity improvement based on the use-case method of capturing functional requirements, we estimate a 14% increase in productivity.
使用基于用例来俘获功能需求改进生产力百分比的保守估计，我们估计能够得到14%的生产力改进。
Using conservative percentages for productivity improvement with the use-case method of capturing functional requirements, we estimate a 14% increase in productivity.
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