During normal operations, the flow direction of a counter-current softener used in boiler water treatment is opposite to that of regeneration.

用于锅炉水处理的逆流软化器，运行与再生时，液流方向相反。

youdao

Using counter-current regeneration technology, special cationic resin replacement.

运用逆流再生技术，专用阳离子树脂置换。

youdao

Even though the UK remains the fourth largest defence spender in the world, it has used its military forces relatively heavily for some time, and a period of regeneration will undoubtedly be needed if those forces are to be ready to successfully counter any fresh unexpected strategic shocks.

BBC: Caroline Wyatt: Political challenges of defence future