The slag forming process and production of low sulfur pipeline steel X52 are described. In addition, further development and application of lf furnace functions are also discussed in the paper.
对低硫管线钢x 52的冶炼造渣工艺和实际生产情况进行阐述，讨论了进一步开发利用LF炉冶金功能问题。
The present paper gives an analysis of the low frequency (LF) vortex and divergent circulation systems and their interactions in terms of the ECMWF/WMO data (summer of 1984).
利用1984年夏季ECMWF/WMO资料分析了低频涡度系统和低频辐散环流系统，讨论了两者之间的相互作用。
The ratio of the low frequency to high frequency components in HRV power spectrum(LF/HF) fluctuates with the change in the sleep stages.
HRV频谱中低频和高频成分的比值（LF/HF）随着睡眠深度的变化而波动。
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