nbaa
- abbr.全国商业飞机协会(National Business Aircraft Association)
nbaa-
NBAA - National Business Aviation Association Airlines Medical Directors Association
美国国家公务航空协会航空公司医务主任协会
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Association of Chinese Scientists and Engineers-USA ( ACSE ) NBAA - National Business Aviation Association
旅美中国科学家工程师专业人士协会美国国家公务航空协会
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In109 cases of sacral tumors various extents of acrectomy was done , 53 cases had nbaa , 56 cases had baa .
骶骨肿瘤切除术109例，nbaa组53例，baa组56例。