Gnuplot is very rich in command options using the set operator.

gnuplot有许多命令选项，可以通过set操作符使用它们。

youdao

UNION ALL is the only set operator allowed between the last anchor member and first recursive member, and when combining multiple recursive members.

在最后一个定位点成员和第一个递归成员之间，以及组合多个递归成员时，只能使用UNION ALL集合运算符。

youdao

To compare with traditional medial filter and Gaussian filter, the image denoising method based on set operator has the characteristics of shape preserving and contrast invariant.

该图象去噪方法同传统的中值滤波、高斯滤波相比，具有保形、保对比度的特点。

youdao

The care-home operator is set to shut down, after landlords owning all 752 of its care homes said they wanted to leave the group.

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