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xuanwei coal measures
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xuanwei coal measures
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理学
二叠纪煤系
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xuanwei coal measures
宣威煤系
晚二叠世宣威组地层发育时期连续沉积形成的一套含有煤层并具有成因联系的沉积岩系。
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laserium
laser jammer
laser land leveling machine
laser, laser light
laser length standard
laser level
laser leveling
laser leveling machine
laser level meter
laser life off
laser lift-off equipment
laser light
laser lighting
laser light scattering
laser linewidth
laser lithotripsy
laser locator
laser locking
laser low temperature fluorescence spectrometry
laser machining
laser master oscillator
laser material
laser materials
laser-measure length
laser measurement technique for geometrical metrology
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