回冲 meaning in Chinese

backwash

Treatment of spent filter backwash water from systems for treatment of water of swimming - pools and baths
来自游泳池和浴池水处理设备的过滤回冲废水的处理
You could sweeten your health drink with maple syrup , should you so require , or a bit of fresh lemon juice can also enhance the taste . a delicious and refreshing drink hot or cold
取约8 - 10克，倒入350 - 500cc的热开水，浸泡4 - 5分钟即可饮用可回冲，如果让自己的舌头味蕾有不一样的味道，可酌加柠檬片蜂蜜之类！