Base on the wellbore tempera-ture dstribution model in this paper, computing the wellbore pressure distribution in the base of homogen method. 以本文井筒溫度分布計算模型為依據，借鑒均質(zhì)模型的井筒壓力求解方法計算井底流壓。
Cerebral perfusion decreases as the intracranial pressure is raised.Irreversible ischemic change occurs when cerebral perfusion pressure is below 40 mmHg. 顱內高壓發(fā)生時(shí)相對的腦灌流壓下降，腦部的循環(huán)便受到影響，當顱內高壓無(wú)法控制而腦灌流持續低于四十毫米汞柱時(shí)腦部終至缺血而死。
