The other is to inject current. It selects the faulty line and realizes zero residual current based on concept of APF.

第二种方法即有源注入的方案，该方法选出接地故障的线路，借鉴有源电力滤波的理念来实现零残流。

youdao

The BBC's Andrew Walker points out that the more common approach to failing banks in the current crisis has been for the state to inject new capital.

BBC: Cyprus bailout: Banks to stay closed until Thursday

Lowering rates for those who are current on bills instead of for those who are delinquent is a simple mechanism to inject more money into the this flailing economy without huge stimulus packages.

FORBES: Banks Need To Offer Low Refinance Rates For Responsible Borrowers, Not Deadbeats