英语语法分析

Summary: Common causes of senile and presenile vertigo in 100 cases were analysed and discussed.

对100例老年及老年前期眩晕病例的常见病因分析讨论。

Objective: to study the effect of Dunhuang Weicifang delaying senility to D-galactose presenile model mice.

目的：研究敦煌韦慈方对d半乳糖所致衰老模型小鼠的延缓衰老作用。

Objective to supply a scientific basis for uniting standard of the reference value of Chinese presenile people's hematocrit.

目的为制定中国老年前期人红细胞压积参考值的统一标准提供科学依据。