The most complex part of RFCC is in the feed injection zone.
提升管的进料段是裂化反应最复杂的区域。
Comparison group 2: the same as the point injection treatment part in therapy group.
分别进行治疗前与治疗后的自身前后比较和组间比较。
Comparison group 2: the same as the point injection treatment part in therapy group.
分别进行治疗前与治疗后的自身前后比较和组间比较。
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