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ash tuff
desert. 灰质凝灰岩
ash-tuff
gen. 火山灰; 凝岩
dril. 凝灰岩
hydroel.st. 灰质凝灰岩; 火山灰凝岩
oil 火山凝灰岩
tech. 火山灰凝灰岩
ash tuff: 4 phrases in 4 subjects
Desert science1
Engineering geology1
General1
Technology1