second value axis的意思|示意

Speed in units per second that the the axis will move toward the target value. This is for digital devices only.

在单位每秒速度，轴将移向目标值。这近用于数码设备。

Since Earth’s rotation rate varies, so would the value of one second when it’s defined as a fraction of the time it takes for one spin of the Earth on its axis.

由于地球自转速率发生偏离，因此当把地球绕中轴旋转一圈作为一个单位时，（这种偏离）就相当于一秒钟时间。