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。

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These template systems have no flow control — no loops or conditionals.

这些模板系统没有流控制——没有循环或条件。

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It's responsible for flow control of humans to systems and system to systems.

它负责人员到系统以及系统到系统的流控制。

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Some engines also contain onboard foam systems, so there will be controls to control the flow of foam concentrate into the discharges.

FORBES: What Do All The Controls On A Fire Engine Truck Do?