Gas chromatography and mass spectroscopy are powerful tools .

气体色谱法和质谱法是很强大的工具。

Using chromatography , a method that divides the molecules in a mixture based on charge or size , they separated out individual proteins from samples of the microbe .

研究者利用层析法一种根据电荷或大小将混合物中的各种分子分离开来的方法，把各种不同的蛋白质从唾液链球菌的样品中分离出来。

And a liquid chromatography and mass spectrometry analysis of sample meteorites and the environments where they were found seems to confirm this .

陨石样品的液相色谱分析和质谱分析以及他们发现处的环境似乎证实了这一点。

At the munich olympics in 1972 , therefore , the ioc introduced some newfangled chemical tools : gas chromatography and mass spectroscopy .

因此，在1972年的慕尼黑奥运会上，国际奥委会引入了一些崭新的化学工具：气相色谱法和质谱法联用。

Continuous separation of enantiomers by simulated moving bed chromatography .

以模拟移动床层析法连续分离旋光性异构物。