用同位素d_2o和KCL作示踪物，在间断灌水的条件下，追踪了D_2O和阴、阳离子在土柱中移动的动态。

Under the conditions of uninterrupted irrigation D_2O and KCL as the tracers traced the kinesis of D_2O, positive and negative ions in the edaphic column.

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质谱仪包括使诸如氦之类的示踪气体离子化的离子源、偏转这些离子的磁铁以及检测这些偏转离子的检测器。

The mass spectrometer includes an ion source to ionize trace gases, such as helium, a magnet to deflect the ions and a detector to detect the deflected ions.

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