On top of the G2 adjustment, is a service / experienced user level adjustment, usually called bias, which allows for fine tuning of the G2 level over a limited range.

• 在G2级别调整之上，是一供维修人员或有经验的用户使用的调整项，通常叫做“偏置调整”，亦即在有限的范围内对G2电压进行细微的调整。