二级转化 meaning in English
second order transition
Examples
- Production process : hydrogen supplied from the petroleum refining partially combusts , two - stage converts , generates the elemental sulfur , cools and shapes
生产工艺：由石油炼制气中的硫化氢，经部分燃烧，二级转化，生成元素硫，然后再经冷却，成型生产出来。