directrix的读音 directrix中文意思

英音  [dɪ'rektrɪks] 
美音  [dɪ'rektrɪks] 
n. 准线
directrix 用法和例句
The forms of generatrix and directrix , and the way of generatrix slides along the directrix would seriously affect the working resistance of soil cultivating component .
构成耕作部件宏观触土曲面的元线、准线及元线相对于准线的运动方式均会对工作阻力产生重要影响。