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nep·tu·ni·um 英nepˈtuːniːəm, -ˈtjuː-美nɛpˈtuniəm, -ˈtju-AHDnĕp-t›“nē-əm, -ty›“- COCA¹⁶¹⁵⁰³BNC¹⁷³⁹⁹⁵⁺²iWeb⁶¹²⁸⁵
基本英英词源搭配近义反义例句
n.化镎93号元素;符号Np简写符号Np
Noun:
a radioactive transuranic metallic element; found in trace amounts in uranium ores; a by-product of the production of plutonium金属元素，来自Neptune,海王星，以与金属元素uranium相对应。neptunium pyrophosphate焦磷酸镎neptunium oxalate草酸镎neptunium series镎族neptunium fluoride氟化镎neptunium amalgam镎汞齐neptunium dioxide二氧化镎neptunium hydroxide氢氧化镎neptunium carbide碳化镎neptunium nitrate硝酸镎neptunium phosphate磷酸镎neptunium hydride氢化镎neptunium carbonate碳酸镎neptunium oxide-sulfide氧硫化镎neptunium peroxide过氧化镎neptunium oxide氧化镎neptunium chloride氯化镎neptunium sulfide硫化镎neptunium acetate醋酸镎
近义词 NP元素镎neptuniu…
The method including the process of extraction chromatography and the mass spectrum measurement for the exact analysis of micro neptunium in the existence of large quantity of uranium is established.
建立了准确测定常量铀中微量镎的方法。方法包括萃取色层法分离和质谱法测量。 cnki
Based on the principle of flow injection analysis( FIA, a special instrument for measuring uranium, plutonium and neptunium is developed;
以流动注射分析 FIA原理为基础，研制了测定铀、钚、镎的专用仪器； cnki
In the spent fuel reprocessing process and for the environmental concerns, very strict control is required for determination of neptunium.
在核燃料后处理工以及环境中，对镎的控制要求十分严格。 cnki |