“airborne control system”的概念、定义、翻译、参考文献-科学参考

单词	airborne control system
释义	airborne control system [`er´bȯrn kǝn`trōl ´sis·tǝm] ^GEODESY A survey system for fourth-order horizontal and vertical control surveys involving electromagnetic distance measurements and horizontal and vertical measurements from two or more known positions to a helicopter hovering over the unknown position. Also known as ABC system.
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