







contour line
And then, the contour plot will be the topographical map for this graph.
That is the contour plot of f with a hyperbola on top of it.

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Open the tool →等高线 (děng gāo xiàn) means “contour line”.
等高线 is pronounced děng gāo xiàn in Mandarin Chinese.
“contour line” is 等高线 (děng gāo xiàn) in Chinese.
This page has 2 example sentences using 等高线, each with pinyin and an English translation.