Results 51 to 60 of about 586,744 (148)
Teshugang, 2008 Inclusion and mechanical properties of ultra-high strength steel G50(0.28～0.29C,1.88~1.98Si,4.45 ~4.49Ni,1.04～1.05Gr,0.57～0.61Mo,0.031~0.034Nb)melied by two process VIM-VAR and EAF-VOD-VAR have been studied.
夏志新 +3 more
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1908～1932年芳香族化合物与杂环化合物的中文命名 [PDF]
, 2013 在考察1908~1932年提出的多种中文有机化学命名方案中有关重要芳香族化合物与杂环化合物的命名及其特点的基础上,论证了在化学命名的用字上,音译要优于意译与象形;进而指出1932年教育部颁布的《化学命名原则》制定苯、萘、蒽、菲等全新的音译名以及确立"取字应以谐声为主,会意次之,不重象形 ...
何涓
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Evolution Behavior of Inclusions in Ti-IF Steel Steelmaking by 300t-BOF-RH-CC Flowsheet
Teshugang, 2017 Of tested Ti-IF steel (/%：≤0.0035C, ≤0.03Si, 0.08~0.20Mn, ≤0.025P, ≤0.015S, 0.05〜0.07Ti, 0.030~0.055Als, ≤0.0040N) the BOF end [C] is 0.03%〜0.06%, end [O] is 0.0030%~0.0060% , the lime and top slag modification agent containing aluminium are added during
姚思源
doaj
, 2014 本发明涉及一种快速，灵敏地检测邻苯二甲酸酯类化合物的方法。以放射性源为电离源的离子迁移谱技术为基本的检测技术，在正离子模式下，通过在循环气路中添加掺杂剂建立一种检测邻苯二甲酸酯类化合物的方法。掺杂剂的加入净化了离子迁移谱正离子模式下的背景谱峰 ...
陈创 +5 more
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Analysis and Control of Macro Inclusion in Structural Steel Melting by EAF-LF-CC Process
Teshugang, 2007 The composition of macro inclusion in 20MnTiB steel and 45 steel melting by 70 t EAF-LF-CC flow sheet at Egang and ingredient of mold powder and refractory material for concasting process have been analyzed,and it is obtained that the macro inclusion
李冬生, 徐冠宇
doaj
, 2003 一种β-榄香烯五元氮杂环衍生物，其结构如I式或II式，其中R为：苯基、4-氯-苯基、3-氯-苯基、2-氯-苯基、4-吡啶基、3-吡啶基、2-吡啶基、4-氟-苯基、3-氟-苯基、2-氟-苯基、4-溴-苯基、3-溴-苯基、2-溴-苯基、4-甲基-苯基、3-甲基-苯基、2-甲基-苯基、2，4-二氯-苯基、4-碘-苯基、3-碘-苯基、2-碘-苯基、4-甲氧基-苯基、3-甲氧基-苯基、2-甲氧基-苯基、4-三氟甲基-苯基、3-三氟甲基-苯基、2-三氟甲基-苯基或C1-C5的烷烃取代，M＝O、S或NH基 ...
肖红斌 +3 more
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Effect of Casting Slab Defect on Cold Draw Quality of SWRH82B Steel Wire Coil
Teshugang, 2007 The microstructure and composition of fracture during cold drawing failure of wire coil of SWRH82B stell (0.80~0.84C,0.75~0.85Mn,0.18～0.22Cr,0.015～0.035Al) produced by 280 mm×380 mm casting slab have been observed and analyzed by scanning electron ...
赵莉萍 +3 more
doaj
, 2004 本发明公开了一种液体夹层容器，该装置包括一个以耐腐蚀的材料如不锈钢作为内胆，以承载力较强的碳钢或其他易于加工且价格便宜的金属做所述液体夹层容器的外层容器，在所述内胆与外层容器之间形成的密闭夹层内充满液体介质。本发明液体夹层容器不但解决了碳钢容器的易腐蚀性和污染性，不锈钢容器的焊接和造价高的问题，还消除了复合容器夹层的间隙，使整个容器受力更加合理 ...
王发民, 姜俊成, 李岐
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Evolution of Inclusion in 304 Stainless Steel during VOD + LF Refining Process
Teshugang, 2018 The change of inclusions in the VOD + LF refining process of 304 stainless steel was studied. Before and after the beginning and end of the smelting process of the second VOD furnace with continuous casting and continuous casting, before and after the ...
王传东, 王志军
doaj
, 2017 报道西藏自治区林芝市发现的2种中国新外来植物:多籽藜Chenopodium polyspermum L.和瑞典藜C.suecicum Murr。两种植物在林芝市区绿化带和空地生长旺盛,并正常结实,说明其在西藏具有较强的入侵能力。调查表明 ...
李振宇 +3 more
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