This is beneficial when the dataset is large and the frequency of queries that request the area of a circle is high.

如果数据集较大，或者经常发出请求圆面积的查询，那么创建函数索引将有助于提高性能。

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Faddy short messages refer to those short literal messages which have a high frequency of copy, a fast speed of popularity, a vast area of spreading and a great power of influence.

时尚短信是指复制频率高，流行速度快，传播面积广，影响力度大的文字短信，它已成为现代人最为重要和流行的一种交际时尚。

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Performing high frequency eddy current inspection of area around skin cutout and make sure that no crack existing.

对蒙皮切口周边区域做高频涡流探伤检查并确定无裂纹存在。

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