无氧铜的反射率为0.021，单层膜的反射率为0.049，因此KBA X射线显微镜可采用镀单层膜的方法加工。
Reflectivity of Cu is 0.021 and that of single film layer is 0.049, thus KBA X-ray microscope is made of single film layer.
结论急性硬膜下血肿患者年龄<40岁、术前GCS评分较高、术前瞳孔光反射存在、术前无低血压和低氧血症、无脑肿胀，患者功能恢复相对较好。
Conclusion Functional recovery is more likely to be achieved in patients who are under 40 years old, and have preoperative reactive pupils, higher GCS score and the absence of ABS during surgery.
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