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- mass spectrographic method 质谱法
- In the mass spectrograph the ions are focused onto a photographic plate. 在质谱仪中,离子聚焦在感光板上。
- Yttrium-europium oxide--Determination of europium oxide content --Inductively coupled plasma atomic emission spectrographic method. 氧化钇铕化学分析方法电感藕合等离子体原子发射光谱法测定氧化。
- F. W. Aston, the British experimental physicist, won the Nobel Prize in chemistry in 1922 due to the invention of a mass spectrograph. 英国实验物理学家阿斯顿因发明质谱仪分离同位素而获得1922年诺贝尔化学奖.
- A direct emission spectrographic Method is used for determing the trace elements Ba,Si,Fe,Mg,Pb,Al,Ca,Cu dnd Cd in metal strotium. 本文研究了以直接光谱法测定金属锶中钡、硅、铁、镁、铅、铝、钙、铜、镉等微量杂质。
- It has been already about 90 years from the first mass spectrograph invented by JJ. J.;Thomson研制出世界上第一台质谱装置到今天已经有了90余年的历史。
- The different determinations of calcium are aqueous titration,voltammetry,optical spectrographic method,ion chromatography,et al. 钙离子的测定则有滴定法,伏安法,光谱法,离子色谱法等不同方法。
- The gas components in the interlayer of the car were analyzed by mass spectrograph. 罐头顶隙气体成分,是造成罐头变质的主要原因。
- The application of mass spectrograph to the amylose structure analysis was reviewed. 就质谱技术在多糖结构测定中的应用进行论述.
- Gas breathed out was collected at 9 different time within 120 min. The samples were analyzed with mass spectrograph to obtain DOB, MV and CUM curves and CUM120 value. 在120 min内9个时间点收集呼出气体;利用呼气质谱仪作出DOB、MV、CUM曲线及CUM120数值.
- The paper introduces the basic principle, constitutes and classify of Mass spectrograph, and mainly reviews the application of food analysis in injurant and toxicant. 本文对质谱技术进行了简要的介绍,并就此技术在食品中有毒有害物质的分析方面的应用进行了综述。
- Method: The gas chromatography-time of flight mass spectrography (GC-TOFMS) was employed. 方法:采用气相色谱-飞行时间质谱法进行测定分析。
- Methods: Graphite oven atom Absorption spectrographic methods was used for determination. 方法:石墨炉原子吸收光谱法测定。
- atom fluorescence spectrographic method 原子荧光光谱法
- flame atomic absorption spectrographic method 火焰原子吸收光谱法
- The research of optimization condition on determination of chromium content in dairy products by graphite furnace atom absorption spectrographic methods was mainly developed. 本文主要开展了石墨炉原子吸收光谱法测定乳品中铬含量优化条件的研究。
- The method seems good but it needs to be tried out. 这个方法似乎不错,但需要试验一下。
- atomic absorption spectrographic method 原子吸收光谱法
- A cloud is a mass of vapor in the sky. 云是天空中的水汽团。
- double-focusing mass spectrograph 双聚焦质谱仪