A navigation control.

一个导航控件。

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All the locks are controlled by engineers from the navigation control room.

所有船闸都有通航调度室的工程师控制。

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In the bottom center, there is a navigation control for navigating the screen in four directions.

在底部居中位置，有一个用于从四个方向浏览屏幕的导航控件。

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"From early indications, it seems to be within our guidance navigation control system, seems to point toward hardware, " Olansen said.

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Around the front is a small LCD screen, four-directional navigation control with central button and two more, marked play and menu.

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Technologies being tested in the program include advanced guidance, navigation and control, thermal protection systems, avionics, high temperature structures and seals, conformal reusable insulation, lightweight electromechanical flight systems, and autonomous orbital flight, reentry and landing.

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