方法：低肢体活动力通过三天以上对45名中到中度COPD患者的腿部活动记录检查来完成，对照组为年龄相近的18人。
Methods: Lower limb activity was measured by leg actigraphy over 3 days in 45 patients with moderate to severe COPD and 18 controls of similar age.
他们还应定期检查电脑记录以发现可能是黑客形迹异常活动。
They should also check their computer records regularly to spot any abnormal activity, which might betray the presence of a hacker.
记录系统活动的程序也能做类似的修改，从而当系统管理员检查日志时，尽管系统已处于危险之中，但一切看来都正常。
Programs that log system activities can be similarly modified, so that when the systems administrator checks the logs, everything looks normal despite the fact that the system has been compromised.
应用推荐