finished ore的用法和樣例：
例句
- The concentrate from a Yunan high sulfur iron ore has a sulfur content that exceeds that specified in the standard due to the pyrrhotite.
雲南某高硫鐵礦石因含磁黃鐵礦而造成精礦含硫超標。 - Experiment on determination of trace Argentum in copper coneentrace ore was done.Method of inhibition of Copper to determine Argentum was studied.
對湖南省麻陽銅礦銅精礦中的微量銀作了原子吸收光譜法制定試驗，研究了銅對銀的測定的干擾，並提出了消除干擾的方法。
