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-massspectrometer.
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。
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Method The fatty oil from Carum carvi L was extracted by ligarine petrum and analyzed by capillary gas chromatographmassspectrometer(GC-MS) method.
方法用石油醚提取脂肪油并甲酯化，采用毛细管气相色谱-质谱联用技术对其进行分析鉴定。
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Gas Chromatograph-MassSpectrometer (GC-MS) with an auto-sampler, split/splitless inlet, programmable GC oven, and capable of selective ion monitoring.