The element phosphorus (p) was the first to be isolated artificially in 1669.
2
研究了活性氧化镁吸附剂对污水中富营养化元素磷的去除性能；
The main work in this thesis is the adsorption performance of magnesium oxide absorbent in removing nourishing element phosphorus from wastewater.
3
研究了合金元素磷对铸铁短纤维烧结体显微组织和性能的影响。
The effects of alloying element phosphorus on microstructure and properties of sintered compacts of short cast iron fibres has been studied in this pa-per.
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