Therefore, production planning and capacity planning of semiconductor manufacturing system is a very complicated problem.
以上因素，决定了半导体制造系统生产计划与能力计划问题是一个非常复杂的问题。
The wastewater contains many components and various physicochemical actions coexist and interact, therefore the whole process is very complicated.
污水中化学成分多样，多种物理—化学作用同时存在、相互影响，整个过程非常复杂。
The wastewater contains many components and various physicochemical actions coexist and interact, therefore the whole process is very complicated.
污水中化学成分多样，多种物理—化学作用同时存在、相互影响，整个过程非常复杂。
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