Tin Production

Tin is one of the earliest metals known and used. Because of its hardening effect on copper, tin was used in bronze implements as early as 3,500 B.C., although the pure metal...锡是人类最早认知并使用的金属之一。因其可使铜硬化，早在公元前3500年，锡就被应用于青铜器具的制作，尽管纯金属……