国家级的技术侦察手段已经提供了目标的高空侦察照片。
National technical means had provided overhead reconnaissance photos of the objective.
艾森豪维尔亲自命令的一架美军高空侦察机U2在1960年五一劳动节这天被苏联击落，飞行员加里·鲍尔斯遭到生擒。
One of the U-2 surveillance flights that Eisenhower ordered ended in spectacular disaster on May Day 1960, when the Soviets shot down the aircraft and captured the pilot, Francis Gary Powers, alive.
拥有115英寸长翼展的全球鹰能够在六万英尺的高空(也就是距离地面18公里)连续执行36小时侦察行动。
The Global Hawk, with a 115-foot wingspan, is capable of conducting surveillance for 36 hours at a stretch at altitudes of up to 60,000 feet (18 kilometers).
应用推荐