基本解释n.底孔同根派生 underport相关词英汉例句Keywords underport flanging;parameter;modification;result; 底孔翻边;参数;修正;效果;Keywords R_C1/4 tapered internal screw;Underport;Macrogram;Programme; 4圆锥内螺纹;底孔;宏程序;编程;underport flanging 底孔翻边underport更多例句