ratf meaning in English

落星刺碎片

The results of the experiment made online and offline indicate that the filter can be regenerated at the temperatures above 300 in the case of spraying h2o2 into the filter . with the reactive temperature increased , the regeneration effect become better . increasing mass flow ratf of hioi improves significantly the dpf regeneration
在离线和在线两种情况下的试验研究结果表明，在添加h _ 2o _ 2的情况下，过滤器可以在300以上的温度下实现再生，而且温度越高，再生效果越明显； h _ 2o _ 2喷射流率越大，再生效果越好；再生的反应产物大部分为co _ 2 ， co的含量很少，因此不会造成二次污染。