虽然平均值是零，但是每一个时间间隔都有一个最大(和最小)读数。

Although the average was zero, each interval had a maximum (and a minimum) reading. In this graph, my APM is displaying a flat zero line indicating the average but also the maximum value.

youdao

在另一些情况下，则可以使用REL(零点)功能将其从读数中减去，或者简单地使用内置的零点抑制功能(如果仪器具有此功能的话)将其消除。

In other cases, it can either be subtracted from the reading by using the REL (zero) feature or simply canceled out by using built-in zero suppression if the instrument has this feature.

youdao

在几秒钟内，表针的读数应为零。

Within seconds the meter hand should read zero.

youdao