英语语法分析

Those may be caused by vasospasm and angiostenosis.

可能由于血管狭窄或和血管痉挛所致。

After infusion of L-arginine, the Vasospasm was vesolved.

在L-精氨酸滴注后，脑血管痉挛缓解。

Early period operation can not decrease the incidence of postoperative vasospasm.

早期手术不能降低术后脑血管痉挛的发生率。