用“3+1”造句大全,3+1造句
It suggests that it is better to use domestic catalyst for "3+2" conversion and the imported catalyst for "3+1" conversion.
并建议:采用国产催化剂时宜选用“3+2”五段转化;采用进口催化剂时可选用“3+1”四段转化。
It suggests that it is better to use domestic catalyst for "3+2" conversion and the imported catalyst for "3+1" conversion.
并建议:采用国产催化剂时宜选用“3+2”五段转化;采用进口催化剂时可选用“3+1”四段转化。