英语语法分析

Objective To design a vectorcardiography(VCG) monitoring apparatus at low cost, with good quality, and easy operation for gastroscopy, and to evaluate its effects in the procedure.

①目的 将一种造价低、性能好、操作简便、适合胃镜检查的持续性心电向量图 （VCG）缺血监护设备 ，试用于胃镜检查者 ，评价其作用与效果。