variable areaˈvɛəriəblˈɛəriə短语¹¹⁴⁴⁶⁷⁺⁴ 基本例句 adj.可变截面的 A design scheme of the intelligent metal tube variable area rotameter is proposed according to the angular position measuring principle of the magneto resistance sensor. 根据磁阻传感器的角位移测量原理，提出智能金属管浮子流量计的设计方案。 cnki