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niobium n.【化學】鈮〔舊名 columbium〕。

niobium ore

Standard specification for wrought titanium - 6 aluminum - 7 niobium alloy for surgical implant applications uns r56700 外科植入設備用鍛制鈦- 6鋁- 7鈮合金的標準規范

Methods for chemical analysis of tantalum and niobium - determination of arsenic antimony , lead , tinand bismuth contents in niobium 鈮中砷銻鉛錫和鉍量的測定

: 800mpa specification for cold drawn 18 10 chromium - nickel corrosion - resisting steel tube niobium stabilized : 800 mpa weldable 冷拉18 10鉻-鎳耐腐蝕鋼管材規范

Titanium materials for surgical implant applications part 5 : wrought titanium 6 - aluminium 7 - niobium alloy 外科手術植入物用鈦材料.第5部分:鍛制的鈦6鋁7鈮合金

Preparation of niobium - based ultrahigh - temperature alloy and selection of crucibles for directional solidification 基超高溫合金制備及定向凝固用坩堝的選擇

The tantalum and niobium reserves of china amount to 20 % and 1 . 5 % of world wide reserves , respectively 摘要我國的鉭占世界儲量的20 % ,鈮占世界儲量的1 . 5 % 。

Spectrochemical determination of tungsten , molybdenum , niobium , titanium and zirconium in uranium hexafluoride 六氟化鈾中鎢鉬鈮鈦鋯的測定化學光譜法

Chemical analysis of ferrous materials . determination of niobium in steels . spectrophotometric method 黑色金屬材料的化學分析.鋼中鈮的測定.分光光度計法

Catalytic kinetic spectrophotometric determination of trace niobium using niobium - potassium bromate - chlorophosphonazo system 分光光度法測定微量鉛的研究

Standard specification for niobium - titanium alloy billets , bar , and rod for superconducting applications 用于超導的鈮鈦合金坯料棒材和條材的標準規范

: 550mpa specification for 18 10 chromium - nickel corrosion - resisting steel tube niobium stabilized : 550 mpa weldable 19 10鉻-鎳耐腐蝕鋼管材規范

460mpa specification for 19 % chromium - 10 % nickel niobium - stabilized corrosion - resisting steel castings 460 mpa 19 %鉻- 10 %鎳鈮穩定的耐腐蝕鋼鑄件

Standard test method for measuring fast - neutron reaction rates by radioactivation of niobium 通過鈮的輻射活化測定快中子反應速率的標準試驗方法

Sales of these magnets , crafted from niobium - based compounds and alloys , continue to grow 這些以鈮化合物及合金制作成的磁鐵,銷售量持續成長。

Chemical analysis of ferroniobium . determination of niobium by x ray fluorescence spectrometry 鈮鐵合金的化學分析. x射線熒光光譜法測定鈮

Synthesis of meta - carboxyl - sulphochlorophenol and photometric determination of niobium in steels 間羧基氯磺酚的合成及其光度法測定鋼中鈮

Production of ultra - pure tantalum oxide ultra - pure niobium oxide from ch3 5chohch3 - hf - h2so4 system 4體系制取超高純氧化鉭和超高純氧化鈮

Methods for chemical analysis of tantalum and niobium - determihation of tantalum content in niobium 鉭鈮化學分析方法鈮中鉭量的測定

Niobium seamless tubes 鈮無縫管