全部

1·Loose iron fillings and magnets are the typical tools for studying magnetism.

使用铁粉及磁铁是很典型学习电磁学的方法。

2·This paper presents a method featuring the utilization of coal ash and iron fillings to treat dyeing and finishing wastewater.

提出采用粉煤灰和铁屑组合处理印染废水的方法。