The correct value of radial circular run-out error with respect to a single datum axis can not be obtained in the traditional measuring method.
用传统的测量方法不能得到单一基准径向圆跳动误差的准确值。
2
In the voltage regulator circuit, the zener diode which ACTS as the voltage datum, along with the temperature change, its regulated voltage value also can have the corresponding change.
在稳压电路中，作为电压基准的稳压二极管，随着温度的变化，其稳定电压值亦会发生相应的变化。
3
The recordation of Buddhism statue in Northern Dynasty are language which have certain age, credible datum and high scientific value, which is important for language studying in separate ages.