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ultrabasic rocks
gen.
超碱岩
;
超
盐
基性岩
expl.
超基性岩
SiO₂ 总量小于45%的一类火成岩,如纯橄榄岩、辉石岩、金伯利岩等。特点是 SiO₂ 不饱和而FeO、MgO 成分较多,几乎全由铁镁矿物组成而不含石英
ultrabasic rock
geol.
超基性火成岩
met.
超碱性岩
soil.
超基性岩
ultrabasic rocks
:
4 phrases
in 2 subjects
Earth sciences
1
Technology
3
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