工程实践表明：采用高阶惯性环节作为过热器蒸汽温度的状态观测器是可行的，适用的。
The engineering practice shows that taking higher-order inertia link as state observer of super heater steam temperature is feasible and in point.
一个高阶被控对象含有几个小时间常数惯性环节时，可简化成低阶时滞系统。
When a high order controlled plant contains several small time constant inertia units, it can be simplified to low order time-delay system.
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