由于制浆造纸过程的复杂性和生产的连续性，对其进行直接控制或优化设计十分困难。
A simulation system for the computer control of pulp and paper production is being proposed.
造纸生产过程中的定量／水分控制十分复杂，存在着大时延的问题。
Papermaking process is very complex and there exists long delay time.
在那其间，他对造纸的过程控制的贡献是非常巨大的。
During that time, his contributions to controlling the process of papermaking were enormous.
在那其间，他对造纸的过程控制的贡献是非常巨大的。
During that time, his contributions to controlling the process of papermaking were enormous.
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