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酸性岩 suānxìngyán
met. acid rock; acidic rock
oil acidite
tech. acid rock (石)
酸性岩SiO₂总量为 69%acidic75%的一类火成岩，如花岗岩、流纹岩等。特点是 SiO₂ 量达到饱和，故矿物中岀现大量石英, Fe、Mg、Ca 含量进一步减少而K、 Na 氧化物的含量明显增加，故深色矿物少，浅色矿物可增加到90% suānxìngyán
expl. acidic rock
酸性岩以石英为主要矿物的火成岩 suānxìngyán
eng.geol. acid rock
酸 性 岩: 32 phrases in 9 subjects
Desert science1
Earth sciences2
Engineering geology2
General1
Geology3
Hydroelectric power stations1
Oil / petroleum7
Soil science1
Technology14

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