As each packet is represented with an sk_buff, the packet headers are conveniently located through a set of Pointers (th, iph, and MAC for the Media Access Control, or MAC, header).
由于每个报文都是使用一个sk_buff表示的，因此报文头都可以通过一组指针(th、iph和mac[用于Media Access Control或者mac头])方便地进行定位。
Objective: To investigate the imaging manifestations of X-ray and ct of idiopathic pulmonary hemosiderosis (IPH).
目的：探讨特发性含铁血黄素沉着症x线、CT影像表现特征。
IPH associated with subarachnoid hemorrhage or subdural hematoma and bigger initial hematoma are the risk factors for IPH, which should be monitored with dynamic head ct scan.
合并有蛛网膜下腔出血或硬脑膜下血肿及较大初始挫伤血肿是IPH患者伤后早期进展的危险因素，应积极予以动态头颅CT复查。
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