But the quadratic curve can be used only in condition when each X-coordinate of the points sequence mapping to only one Y-coordinate, so it can't be used in fitting closing curve.

但二次多项式只能拟合x坐标与Y坐标之间成函数关系的点序列，无法拟合闭合曲线。

youdao

This example relies on mapping infrequently used characters such as a left angled quote («, often coded as «) and assumes that such characters do not appear in the resulting sequence otherwise.

这个例子依赖于映射不常用的字符，如左尖引号（«，通常编码为 «），并假设这样的字符不出现在结果序列中。

youdao

The object is to introduce a perturbed iteration method for proving the convergence of sequence of Lipschitzian pseudocontractive mapping using approximate fixed point technique.

使用近似不动点技术，采用摄动迭代方法，目的是证明利普希茨伪紧缩映射序列的收敛性。

youdao

Then two competing groups of scientists--one working for the government and one in the private sector--stopped feuding and announced the first mapping of the human DNA sequence in June 2000 at the White House.

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