多重PCR法检测对虾皮下和造血器官坏死杆状病毒
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目的: 1、开发小动物立体定向固定系统和适合制备小动物脊髓半侧损伤模型的打击管及连接装置.
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In the dry tube switching for gas exports dry gas pressure stability.
在干燥筒切换时连续供气,出口干燥气工作压力稳定.
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A study on the composition, structure and corrosion resistance of HSN 70-1b condenser tube
HSn70-1B冷凝管成分组织及耐蚀性能研究
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Stress and metal flow in steel tube during sizing process were analyzed.
分析了定径过程中钢管内金属流动和弹复行为.
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可用轮胎工具或扁平的撬棒把轮缘的一端从轮辋辋圈上撬起。要当心不要损坏轮胎轮缘或内胎。
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Carbon content is closely related with quality of the seamless steel tube.
碳含量的高低对无缝钢管的质量影响较大.
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Introduced hot-rolling seamless steel tube to produce development trend of the technology.
介绍了热轧无缝钢管生产技术的发展趋势.
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Presently, expansion concrete is widely applied to arch steel-tube-bridge.
目前微膨胀混凝土在钢管拱桥中广泛应用.
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换向-比例阀及其在φ140无缝钢管厂的应用 ( 续完 )
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Clinical application of direct vision stomach tube intubation by tongue depressor
压舌明视插胃管法的临床应用与研究
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