1. according to the different characteristics of load at work, helical springs can be divided into three types: compression, tension and torsion. 2. according to the structural characteristics, it can be divided into two categories: cylindrical helical spring and variable diameter helical spring. 3. according to its shape characteristics, it can be divided into conical, scroll, concave and convex shapes. 4. in production and use, the spiral spring can also be divided into two types: large spi...
လုံးဝကို ကျပန်းဖြစ်စဉ်ပါ။ParaCrawl Corpus ParaCrawl Corpus