火成岩

Your little rework on site's design looks really good !!

你的小返工对网站的设计看起来非常好！

Results In all the deaths related to subarachnoid hemorrhage , the main cause for the cases under 40 years of age was angiorrhexis mostly due to the malformation of the cerebral arteries or veins, while for the cases aged 40 years or more, angiorrhexis relating to atherosclerosis was found to be the primary cause , with ruptures occurring in striate arteries and posterior choroidal arteries.

结果 在本组蛛网膜下腔出血致死的案例中，40岁以下年龄段以脑动静脉畸形血管破裂为主要原因，且以动静脉畸形多见。 40岁以上年龄段，动脉粥样硬化血管破裂为第 1位原因，破裂处为大脑中动脉的豆纹动脉、脉络丛后动脉。