土木工程师建造桥梁和其他结构的数学模型，从而在进入昂贵的实际建设阶段之前计算出所设计的结构能够承受多大的重量和压力。
Civil engineers build mathematical models of Bridges and other structures to calculate how much weight and stress they can bear before committing to an expensive construction phase.
本文以实际的焦炉煤气集气系统压力过程为对象，介绍一神极点配置自校正调节器设计的新方法。
By the practical pressure process of coke oven gas collection system as object, a new method of to design pole placement self-tuning regulator is introduced in the paper.
在经济器系统的设计中，中间补气压力往往通过理论分析和计算确定，但所得结果与实际情况并不能很好符合。
In design of economizer, the gas addition pressure used to be determined by theoretical analysis and calculation, and the result cann't agree with what is real.
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