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gamma logging device
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gamma logging device
伽马测井仪
依据天然或人工伽马源在地层和井眼中生成辐射场,测量和分析伽马射线的强度和能谱,借以研究地层的岩性、矿物成分、密度、孔隙度、流体运移及相关地质工程问题的一系列原子核地球物理测井仪器。
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drawnwork
drawn work tablecloth
draw on the advantages and avoid disadvantages
drawplate
draw textured yarn machine
draw tube
drawtube
draw twisting
Dr.Bethune
DRC
D. R. Cox
D. R. Cox (1924—)
DRE
dream
Dream Chaser spacecraft
Dream Fu
Dream Heaven
Dreaming of Space
Dream in Linchuan
dream interpretation psychology thought
Dream of Aspen Flowers
Dream of Pomegranate Blossoms
Dream of the Red Chamber
Dreams of Cyan Chamber
Dreams of Heaven
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