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。
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。
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.
北朝造像记属于这一时期的石刻语料，时代确定，真实性强，是作语言断代研究的重要语料。
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