短語詞組短語two stage adverse current 兩段逆流gas adverse current 瓦斯逆流adverse current cooling 逆流式冷卻the adverse current 逆流adverse current synthesis 逆流郃成;竝流郃成adverse current cleaning 逆流清洗adverse slope density current 反坡異重流adverse current settling 逆流沉降Along or adverse current 順流逆流 返回 adverse current