按时的英语我爱北京(I Love Beijing)陌生的世界>隐蔽拼音雪花粉>折弯半径beijing, the capital of china,is a very beautiful and important city,which is one of the ancient cities in china. there are many famous wonders and beautiful
钣金展开计算公式(最终定稿)第一篇:钣金展开计算公式钣金展开计算公式pul是什么意思当角度为钝角时:L=L1+L2-[2×(180-角度)/90×材料厚度+M×角度/90]first day of my life当角度为锐角时:L=L1+L2-[180/角度×材料厚度-(180-角度)/180 ]第二篇:钣金展开计算公式--很实用先说一个名词:折弯余量折弯余量这个名词我在论坛别的贴子已经说过,
Sheet Metal Designyanyifei佛祖舍利Day 1MorningIntroductionLesson 1 Flange (直边折弯)Lesson 2 Preferences and Standards Lesson 3 Int Flange (嵌入式直边折弯) AfternoonLesson 4 Sheet Metal Ben
Sheet Metal DesignyanyifeiDay 1MorningIntroduction手工大全Lesson 1 Flange (直边折弯)Lesson 2 Preferences and Standards Lesson 3 Int Flange (嵌入式直边折弯) AfternoonLesson 4 Sheet Metal Ben