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mining activity concentration area
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mining activity concentration area
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经济学
矿业活动集中区
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mining activity concentration area
矿业活动集中区
在矿产地域分布的自然属性和矿业经济活动地域分布的社会属性的基础上，形成与发展起来的具有特殊性质的地域生产综合体。
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On My Way to Xuancheng
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Onnes equation of state
On New Democracy
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ONOC
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on-off element
on-off measurement
on-off time apportionment method
Ono inequality
onomasiological dictionary
onomastic dictionary
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Onora O' Neill
on-orbit calibration
on-orbit collection and management of excrement and urine technique
on-orbit control
on-orbit liquid and gas separator technique
on-orbit telemedicine
on-orbit wastewater treatment technique
on-orbit water management system
On Origin of Regular Scripts
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