Objective: to establish the contents determination method of (-) -menthone, menthol, cinnamic aldehyde in Po Sum on oil by capillary column gas chromatography.

目的：采用高效毛细管气相色谱法同时测定保心安油中(-)-薄荷酮、薄荷脑和桂皮醛的含量。

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The determination method of Tetracycline family of drugs residue in the tissue was improved through the pretreatment and selection optimization of GC analytical conditions.

通过前处理方法和色谱分析条件的选择优化，改进了组织中四环素族药物残留的检测方法。

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The determination method of sea surface topography is important for sea users to improve the positioning accuracy with the double satellite navigation and positioning system.

海面地形的确定方法研究对提高双星导航定位系统海面用户定位精度具有重要意义。

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"Our management's determination to change to the preferred method of accounting for employee stock options ensures that our earnings will more clearly reflect economic reality when all compensation costs are recorded in the financial statements, " said Coca-Cola Chairman and Chief Executive Douglas Daft in a statement.

FORBES: Coke Opts For More Honest Accounts