Check whether connection between cable plug of sighting telescope and corresponding socket (XS1) is loose or not.

检查瞄准镜电缆插头与相应插座(xs1)之间连接是否松动。

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Check whether connection between cable plug of sighting telescope and corresponding socket (XS1) is loose or not.

检查瞄准镜电缆插头与相应插座(xs1)之间连接是否松动。

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