The eq function compares an argument to the context and returns true if they are the same.

eq 函数将参数同上下文比较，如果它们相同，就返回 true。

youdao

First, there is one band of parametric eq with adjustable frequency, gain and bandwidth.

首先，有一个波段的参数均衡器调节频率，增益和带宽。

youdao