In Figure 3, version Vb is a successor to version Va, and version Vc and Va are successors to Vroot, where the version graph begins.

在图3中，版本Vb是版本Va的后续，版本Vc和Va是Vroot的后续，Vroot是版本图的开始。

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Both VA and VB are affected by the drift in the thermoelectric EMF, but the effect on VA and VB is equal and opposite.

VA和VB都受到热电动势漂移的影响，但是其对于VA和VB的影响是相等、相反的。

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Turn tester on (before connecting hoses). Tester must read all zeros. Close VA and VB.

打开检测器(在连接软管之前)。检测器的所有读数必须为零。关闭VA和VB。

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