A heating value feedback adjusting system was developed using the airflow heating method to measure the heating value online with air added to the gas to adjust the heating value.

利用对空气流加热的方法在线测量燃气的热值，通过给燃气加入空气调整燃气热值，设计了燃气热值反馈调节系统。

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The online adjustment of intermediate roll is calculated from the closed loop feedback flatness control system dependent on the actuator efficiency factors.

基于板形调节机构的调控功效，由闭环板形控制系统给出了中间辊在线横移的调节量。

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What Google has done is they've created an advertising system by which you can place online ads that gives really good feedback.

NPR: Google Tries to Bridge Newspaper, Web Ad Contracts