Выражение встречается в следующем контексте:
The credit auction has provided additional flexibility in reaching monetary policy objectives. In particular, it is quite suitable for injecting liquidity; however it is constrained in withdrawing liquidity to the extent that a withdrawal of liquidity can only be achieved by choosing not to roll over maturing credits.

Innjecting liquidity - это, как я понимаю, "восполнение недостатка ликвидности"
Заранее спасибо