发布时间:2025-01-21 21:30:21
GCr15 和 GCr15SiMn都是滚动轴承钢。
GCr15是表示平均含铬量为1.5%的滚动轴承钢。
GCr15SiMn是表示除含铬1.5%外,还含有含量小于1.5%的硅、锰元素的滚动轴承钢。
GCr15一般用于直径25~50mm的滚珠。
GCr15SiMn一般用于直径50~100mm的滚珠,和直径大于22mm的滚柱。
showroom做为连接时装设计师及买手店是如何在时尚产业里发展起来的
2025-01-21 21:30:21 2025-01-21 21:30:21 2025-01-21 21:30:21 2025-01-21 21:30:21 2025-01-21 21:30:21 2025-01-21 21:30:21 2025-01-21 21:30:21 2025-01-21 21:30:21 2025-01-21 21:30:21 2025-01-21 21:30:21 2025-01-21 21:30:21 2025-01-21 21:30:21 2025-01-21 21:30:21 2025-01-21 21:30:21 2025-01-21 21:30:21 2025-01-21 21:30:21 2025-01-21 21:30:21 2025-01-21 21:30:21 2025-01-21 21:30:21 2025-01-21 21:30:21 2025-01-21 21:30:21 2025-01-21 21:30:21 2025-01-21 21:30:21 2025-01-21 21:30:21 2025-01-21 21:30:21 2025-01-21 21:30:21 2025-01-21 21:30:21 2025-01-21 21:30:21 2025-01-21 21:30:21 2025-01-21 21:30:21