sulphur-iron ratio

• 硫铁比

sulphur-iron ratio的用法和样例：

例句

1. And yet pure iron is scarcer than gold or diamonds.
   然而纯铁比黄金或金刚石还罕见。
2. Other things being equal, iron heats up faster than aluminium.
   其他情况一样时，铁比铝热得快。