A device, such as a ruler, TAB, or bar, that serves as an indicator or ACTS to regulate a motion or operation.

导向装置用作指向物或用来调整运动方向或运行的装置，如尺子、调整片或栅栏。

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A device, such as a ruler, TAB, or bar, that serves as an indicator or ACTS to regulate a motion or operation.

导向装置用作指向物或用来调整运动方向或运行的装置，如尺子、调整片或栅栏。

youdao