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geomagnetic polarity
 geomagnetic polarity
oil 地磁极性
| subzone
 subzone
gen. 小 区; 亚 区
econ. 子区
hydroel.st. 小区
oil 亚层; 亚带
textile 附属贸易区

to phrases
geomagnetic polarity
oil 地磁极性
geomagnetic polarity subzone
: 15 phrases in 5 subjects
Earth sciences2
Geophysics1
Oil / petroleum7
Space1
Technology4