在七天的实验里，每隔一定时间就要更换一次纤维，然后用一种叫做气相色谱质谱联用仪的装置提取以供分析。
The fibres were replaced at regular intervals over the course of seven days and taken away for analysis by a device called a gas chromatograph-mass spectrometer.
现代断陷湖盆沉积考察表明，并非湖盆边缘处处发育粗粒沉积相，粗粒沉积体系仪仅发育在主河口附近。
The reviews of modern half graben lakes show that coarse depositional facies do not developed everywhere along the lake margin, but only at the main river mouths.
过程气相色谱仪由取样机构，柱和检测器组成。
The process gas chromatograph consists of a sampling mechanism, a column and a detector.
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