So the unknown is a function, and the equation will relate the partial derivatives of that function to each other.

未知量是一个函数，这个方程，将把函数的偏导数联系起来。

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The partial function partially applies a function with a subset of its arguments and returns a new one that takes fewer arguments.

partial函数局部地应用使用其参数子集的一个函数，并返回一个获取更少参数的新函数。

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Partial application is a broader technique that resembles currying but does not restrict the resulting function to a single argument.

部分应用是一种更广泛的技巧，它与局部套用类似，但是生成的函数并不限于单函数。

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