惯例 convention; usual practice; customary rule; customs and usages; routine 国际惯例 international practice; 操作惯例 working rule; 按照惯例 by customary rule; follow the practice of; 违背惯例 out of usual practice; 公认的惯例 a recognized practice; 打破惯例 break away from practices [customs]; 惯例法 code of practice; conventional law
Technical drawings - general principles of presentation - basic conventions for views 技术制图.表示的一般原则.基本惯例
Technical drawings - general principles of presentation - basic convention for lines 技术制图.图形表示的一般规则.线的基本惯例
Technical drawings - general principles of presentation - part 30 : basic conventions for views 技术图纸.表示方法的一般原则.第30部分:视图的基本惯例
Technical drawings - general principles of presentation - part 20 : basic conventions for lines 技术图纸.表示方法的一般原则.第20部分:直线的基本惯例
Technical drawings - general principles of presentation - part 40 : basic conventions for cuts and sections 技术图纸.表示方法的一般原则.第40部分:断面和截面的基本惯例
Technical drawings - general principles of presentation - basic conventions and applications for leader lines and reference lines 技术制图.表示法的一般原则.主线和基准线的基本惯例和应用
Technical drawings - general principles of presentation - part 50 : basic conventions for representing areas on cuts and sections 技术图纸.表示方法的一般原则.第50部分:断面和截面部分上表示区域的基本惯例