Firstly, the obstruction of urinary tract was removed, and then the changes of renal function were observed.

方法首先解除引起肾功能损害的梗阻因素，观察解除梗阻因素后肾功能的变化情况。

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Firstly, the obstruction of urinary tract was removed, and then the changes of renal function were observed.

方法首先解除引起肾功能损害的梗阻因素，观察解除梗阻因素后肾功能的变化情况。

youdao