用同位素比质谱方法可在4或5天之内检测到阳性结果。

The positive result could be achieved within 4 or 5 days.

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而且以MAT - CH_5质谱计测量氧同位素比时的本底校正作为例子。

Furthermore, the background correction during the oxygen isotope ratio measurement with MAT-CH5 mass spectrometer was chosen as an example.

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而且以MAT - CH_5质谱计测量氧同位素比时的本底校正作为例子。

Furthermore, the background correction during the oxygen isotope ratio measurement with MAT-CH5 mass spectrometer was chosen as an example.

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