1·It can be used in LF transmissions.
它可以在低频传输使用。
2·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。
3·LF vibration oil recovery has become an important physical stimulation method, but its theoretical study is lagging behind field application.
低频振动采油技术已成为一项重要的物理增产、增注措施，但其理论研究水平目前还相对滞后于现场应用。
4·Configuration: 2-way symmetrical, dual LF, triple HF.
配置：2路对称，双低频，三高频。
5·Cast frame and oversize LF voice coils mean sustained high power output capacity and minimal power compression.
铸造框架和特大型低频声音线圈意味着持续的高功率输出容量和最低的压缩。