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carbon/nitrogen
 carbon-nitrogen
geol. 碳—氮
| ratio
 ratio
gen. 收音机
econ. 百分率
math. 比率,比
met. 系数
sport. 比值
stat. 定量; 比重

to phrases
carbon-nitrogen
geol. 碳—氮
carbon/nitrogen: 41 phrases in 14 subjects
Agriculture5
Automobiles1
Aviation2
Chemistry2
Desert science3
Earth sciences5
Ecology4
Geology3
Metallurgy1
Oil / petroleum2
Oil processing plants1
Space2
Technology9
Water resources1