作为稀有土壤来源的一种矿物，由铁、铍、铈、钇、铒的硅酸盐矿物构成。
A mineral that is a source of rare earths; consists of silicates of iron and beryllium and cerium and yttrium and erbium.
球墨周围的铁素体和珠光体是贫铈的，而远离球墨的珠光体和莱氏体是富铈的。
Ce is depleted from ferrite and pearlite surrounded by nodular graphite, and enriched in pearlite and ledeburite far apart from nodular graphite.
研究了二氧化铈、三氧化二铁和气相法二氧化钛等金属氧化物对共聚氟硅橡胶SKTFT -2 5耐热性能的影响。
The effects on the heat resistant properties of the metal oxides, such as ceria, ferric oxide and fumed titania etc, to the copolymerized fluorosilicone rubber SKTFT-25.
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