报告了自1990年以来通过与量子化霍尔电阻比对考核的国家直流电阻(实物)基准的长期漂移率及偏差。
The drifts and deviations of National DC (artifact) Resistance Standards by comparison with Quantum Hall Resistance (QHR) since 1990 is reported.
经研究，发现地极还存在长期的漂移和周期约30年的长周期摆动。
The study found that there are still a long-term polar drift and cycle of about 30 years of long-period oscillation.
应用上面长期光束扩展半径表达式和马尔可夫近似获得了光束漂移表达式。
The expression of optical-beam wander is obtained from above long-term optical-beam spreading formula and the MA.
在长期的观测过程中，仪器机械部分和电路部分均会产生漂移，因此，仪器记录曲线的格值必须定期进行标定。
As a consequence of the drift of inclinometer's mechanicalness and electrical circuit during the long-dated observation, the lattice value of the inclinometer's record trunk must be calibrated termly.
针对不同贮存环境对高压脉冲电容器电容量漂移的影响进行了长期对比实验研究。
The experiment being made by our research group is aimed at obtaining the result of the capacitance variability of high voltage pulse capacitor.
该系统具有低损耗、长期低漂移特性。
该系统具有低损耗、长期低漂移特性。
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