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flint mines of Spiennes
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flint mines of Spiennes
Encyclopedia
理学
〔国外矿冶史〕
释
flint mines of Spiennes
斯皮尼斯燧石矿
比利时新石器时代燧石开采遗址,世界遗产地。位于比利时中部瓦隆区(Wallonia)蒙斯市(Mons)东南6千米处,是欧洲迄今发现燧石矿中最古老、规模最大(约100公顷)的一处。
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NdYAG laser
Nd:YAG激光器
NdYAG激光器
ND滤镜
NE
Ne
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NEAFC
Neagh,Lough
Neal L. First
Neander
Neander crater
Neanderthal
Neanderthal human remains
Neapolitan chord
Neapolitan School
neap rise
neap tide
NEAR
near
near-algebra
near axial ray
near-azeotropic mixture
nearbalanced accurate pressure control drilling
near balanced perforation
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