Especially, the use of SC cut quartz crystal further improves the short-term frequency stability and acceleration sensitivity.
尤其是石英晶体谐振片采用了SC切型进一步提高了短期频率稳定度和加速度灵敏度。
An ultrashort term frequency forecast of the system frequency is made for the hydropower station and the results have been applied in computer frequency control of the hydropower station.
本文对主调频水电站进行系统频率超短期预报，并把预报结果直接应用于水电站的计算机频率控制。
Still, the mathematical models used to rank results are usually some variation of the common term-frequency/inversed document frequency model, which is well-mapped territory.
尽管如此，用于排序结果的数学模型通常是常用的词频/倒排文档频率模型的变体，而对于这种模型，已有很好的研究基础。
Still, the mathematical models used to rank results are usually some variation of the common term-frequency/inversed document frequency model, which is well-mapped territory.
尽管如此，用于排序结果的数学模型通常是常用的词频/倒排文档频率模型的变体，而对于这种模型，已有很好的研究基础。
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