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X-51

X-51

X-51

X-51

1

Earlier this week, the Air Force announced that the X-51 WaveRider , a wingless scramjet, would make its first hypersonic flight .

本周初，美国空军宣布，超音速冲压喷射发动机驱动的 X-51 “驭波者 ”将进行其首次超音速飞行。

2

After learning that the scramjet would reach Mach 6 , we couldn't help but reflect on the progress aviation has made in just a century .

X-51 的速度将达到 6 马赫（6 倍音速），让我们惊叹之余，不由得要回顾一下航空科技在短短一个世纪内取得的进展。

3

Results Only 51. 9% of the cases of nasal bone fracture were showed by lateral X-ray film causing a high misdiagnosis rate ;

结果：鼻骨侧位片仅能检出 51.9%的鼻部骨折，漏诊、误诊率非常高；

4

Analysis of causes of misdiagnosis of rib fracture in the initial X-ray plain film (report of 51 cases )

肋骨骨折首次 X 线平片检查漏诊原因的分析（附 51 例报告）

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