This type of flow sensor is widely needed in the flow control systems and has been successfully used in the home-produced prototype hydraulic elevator with flow electrical feedback control system.
作者研制的动态流量计是国内流量控制系统中所缺乏和急需的器件，已成功地应用在国产液压电梯流量反馈控制样机上。
So the feedback and control of teaching information is a necessary link in teaching information flow.
教学信息的反馈和控制，是教学信息流程中必要的环节。
A fuzzy controller constitutes the part of the fuzzy feedback control with the adjusting policy of task flow.
模糊控制器与任务流调节策略一起构成模糊反馈控制部分。
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