How it works 1 of 3 metal

2 主题	38 帖子	1万积分

Rank: 8 Rank: 8

发表于 2020-12-20 20:44:45 | 显示全部楼层 |阅读模式

推荐一个视频——如题，introduce the history of metal,including copper,iron,steel,aluminum,and superalloy.the video lasts about one hour.

GMT+8, 2024-5-6 13:08 , Processed in 0.102522 second(s), 22 queries , Gzip On.

		自动登录	找回密码
密码			立即注册