With this radar system and a specially trained Air Force crew the aircraft can operate at a low altitude and in night or adverse weather conditions.
有了这种雷达和经过特别训练的空军机组，飞机可以在很低的高度、夜间或不利的天气条件下飞行。
2
Objective To discuss the quality, blood transfusion effect and adverse reaction of the washed red blood cells that were made from middling and severe chyle whole blood at high altitude area.
目的探讨高海拔地区中、重度乳糜全血制备洗涤红细胞的质量、输注效果及输血不良反应发生情况。
3
When we arrived in Mexico we discovered that the altitude there was 7000 ft. or 2150 km above sea level. This had a very bad adverse effect on our health.