navigation aid造句怎么写
- 造句
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Setting up any lighting or sound devices affecting navigation safety in the vicinity of a navigation aid in violation of Article 11 of the Regulation on Navigation Aids;
If navigation aids or navigational facilities malfunction or become abnormal;
ground radio navigation aid
Gee navigation aid
Some 17 traffic-control systems have been established, 300 navigation aids set up or upgraded, and 20 RBN-DGPS stations in coastal ports and crucial waters established, basically achieving the target for completing the nation's navigation aid chains.
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