在使用水平仪对平行度误差进行测量及评定时，目前一直沿用着用手工按图解法或计算法进行数据处理。
In measuring and evaluating the parallelism error with the leveler, data processing is conventionally carried out by manually graphic and calculation methods according to the data measured.
本文采用色一质联用仪、傅立叶红外光谱仪、核磁共振仪对神经酸及其杂质进行定性，并作详细谱图解释。
Nervonic acid and its impurities were separated and identified by GC-MS, FTlR and NMR. The diagrams are exp1ained.
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