To achieve the four-phase stepper motor to start, stop control, reversing control.

实现对四相步进电机的启动，停止控制、正反转控制。

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Sensorless DC motor close-loop control module include reversing control, current loop regulating, the positive and negative rotational speed controls with speed ring etc.

无传感器闭环控制模块包括换向调节、电流环调节和速度环调节、正反转速控制等功能。

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It is made up of heat accumulation recovery system with high efficiency and reversing combustion system as well as control system.

它是由高效蓄热式回收系统，换向式燃烧系统和控制系统组成。

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This lack of direct control also makes reversing these trends problematic.

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Texas was a battleground for the tort reform movement in the 1990s, with pro-business conservatives eventually winning control of the Texas Supreme Court and reversing the state's image as a haven for plaintiff lawyers with exotic new theories of damage.

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