Slagging is a very complicated physical and chemical process which deals with several scientific courses such as combustion, multi-phase flow, heat and mass transfer etc.

结渣过程是个十分复杂的物理化学过程，其中涉及燃烧、气固多相流、传热与传质等多门学科。

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The formation of its flavor is a complicated chemical and physical process, and all kinds of its factors interact, thus creating a special flavor of the lion's head (the meatball) in Yangzhou style.

它的风味形成是一个复杂的物理和化学的过程，并且各种因素之间进一步互相影响，相辅相成，从而最终形成淮扬名菜—扬州狮子头独特的风味。

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The working process of oil chemical production equipment is complicated and its manipulating parameter is accurate and the materials processed are of great danger.

石油化工生产工艺装置复杂，工艺控制参数苛刻，处理的物料大都具有易燃易爆等特殊的危险性。

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