英语语法分析

Takayasu's arteritis is a common clinical disease in Norh of China.

大动脉炎是我国北方比较常见的一种临床疾病。

About half of liver infarcts occur with arteritis, and the remaining half are due to a variety of causes.

大约一半的肝脏梗死出现于动脉炎时，其余半数的病因多样。

Results Periarteritis nodosa was mainly characterized by necrosis of arteries and arteritis with all the layers involved.

结果结节性动脉周围炎是一类以动脉坏死为主要特征、累及全层动脉的炎性病变。