“除铁”造句

除铁 、 锰、铅外, 伴生有银、铟.
Iron, manganese and lead are the major minerals, accompanying silver and indium.

介绍了磷酸盐除铁的主要研究成果.
Also , major research results for removing iron by phosphate has been introduced.

用海绵铜生产硫酸铜,其困难在于除铁杂质.
A hard problern is free from impurity iron in tbe preparation of cupric sulfate from spongy - copper.

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